Official C90/C90S/C91/C80 Owners Lounge

I don’t have yet information. Please try to understand that I don’t know everything and I have no experience with C90P or a C90P motherboard. I can't push the people just because you need an answer!​

I don’t know that, it’s possible of course. You should discuss your conclusion with the seller!​

Toshiba romless MXM-II HD4650 DDR3 1 GB @ Acer 5920G soldering project for beginners
​

I followed Angel’s experience and bought 9600m ($160) and 3650 ($100) as a backup card. He was kind to put pictures of the cards. Then I built only the part from ASME 1.0 with the GPU heatsink, without the GPU-CPU Bridge. Later he sent to me ASME 4.0 for free. Since then I have no problems with my laptops.​

I can’t understand the question. The pictures with that mod are on “C90S Unleashed”. Please take a look at “ [NW] Upgrade the C90S to a 9600M GT 512MB DDR3 [FIXED!]” too.​

All cards come from other laptops. There is no one who can give you warranty that they will work in C90S/P! I can’t help you here because I don’t know.​

It is up to you. If you use a card different from Asus Nvidia 8600m it will requires heatsink modification whatever which heatsink you choose to use – the original one or another.​

Please read “ [NW] Upgrade the C90S to a 9600M GT 512MB DDR3 [FIXED!]” too.​

I don’t know.​

 

My conclusion about the C90P mobo is that the seller is lying when they say it was tested, if the bios is as old as we think it is maybe 601,could even be 0401 no way of knowing, no E series CPU would work with it , therefore it could not been tested with E6850 like they claim, not even with E2200 like they earlier said and if they had updated or flashed the BIOS, then they would know what the current BIO version is and all they can say is mobo V 2.0 so I call B.S. and that will be my argument for full refund, either way I cant use it, I will not consider C90p in the future till I can at least justify time and cost and can at least Afford a decent quad core. OK well I think you have helped as much as you can I'm going to post my questions to main forum hopefully mod won't move them here again, please let me know if you find out anything further about the programmer.
Thanks

 

I have to agree that it either has an old bios and has not been tested or is faulty. It's not the sort of project to have a lot of money thrown at.

 

Finally another voice in the wilderness I was starting to think no one else is paying attention to this thread! Thanks for chiming in, and I am using Aliexpress Dispute Resolution and I am asking for a full refund and not have to pay to ship back the board, look like the only way I will have a C90p in the future is if I can find someone to sell me one for a reasonable amount.

Update I heard back from the seller of the Programmer and this is what they said

"We thought it can work with 25P10VP ST,hope you try it again,ok?If it still doesn't work,we will refund for you,ok?

Please reply to advise."

I located the BIOS EEPROM and it says MX but the rest is so small I can't read it, I did a search for 2510VP programmer but there is nothing.

From Badflash.com
'They said if the bios chip had a MX on the top it could not be flashed'

Anyone know about this?

 

Still waiting for some advice here. I posted to the main forum, but so far no response.

 

You can ask for help Ken from GenTech, he is one of the NBR members who was selling C90S long time ago.

---

.. I forgot about the Bravest Heart and the King of Acer – triturbo :thumbsup:. His thread is one of the most valuable on NBR to me. Cooling Acer 5920G is something like Mission Impossible but not for him. Maybe he will help you ..

5920G Cooling overhaul S2+TU​

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.. and King of Interns – the King of Asus C90P :thumbsup:.

---

 

The programmer supports SPI programming according to hardware specifications. Unfortunately with the accompanying software you can't use this feature to the moment.

 

Ok, well I noticed something else, programmer has 10 holes and the SPI has 8, does that make a difference? Also just got a Celeron 420,. put it in and same thing, so now I escalated the dispute and have to wait and see what Ali decides, one last question there is another SPI type connector on the board, this isn't a voltage regulator by any chance and needs to be jumped properly for CPU to work? I would have replied sooner, but I was overnight in the Sleep Lab, I now have a CPAP machine and hopefully will be able to get a lot more sleep.
Thanks
Update, Good news, the C90S I got outbid on was relisted and the seller gave me a second chance so I bought it only cost me \$67 plus shipping, I know the card will be an 8600 and I intend to do the heat mods recommended by Angel and not run too many intense apps or games often, I figure this will buy me some time till I can upgrade the card and do a ASME mod.

 

The SPI header is not a jumper’s section! It has a specific layout to the manufacturer.

The 8600m failures are caused by the used manufacturing technology. It doesn’t matter if you are using Notepad or a game.

 

It's thermal cycling stress on the solder balls between the die and the package (not package and motherboard) so it's a pretty nasty situation.

 

SPI uses a minimum of 4 wires.
If you have a SPI programmer and you have access to the correct pin-out diagram then you can build a cable to access it.
Serial Peripheral Interface Bus - Wikipedia, the free encyclopedia

 

@Ken

I’ve got the power ! Today I’ve received a C90P mobo that is working perfectly with Q9550S. Now I should build the ASME 1.0 .

A few weeks ago I received from a friend used 8 GB RAM and Q9550S. Immediately I ordered C90P. When it came I’ve tried Q9550S and mobo was as dead . Then I sent the patient to Angel for a second opinion. I was told that the mobo BIOS doesn’t support Q9550S and that he will flash the BIOS 803. With the mobo he sent me back and the original mobo BIOS.

The 4650 with 1 GB DDR3 is going to meet my C90P. I have the video BIOS programmed on the chip. Only the soldering of three resistors and the video BIOS chip is the last job. It’s a piece of cake to me.

For the right programmer ask Angel if you are interesting. BTW for the SPI programming of C90P you need 6 wires.

 

Glad to hear you got a working C90p mobo now maybe you can help me figure out what's wrong with mine before I have to send it back. In reference to the SPI, I'm confused if the the SPI has 7 connector pins on it, and it only uses a minimum of 4 then why can't I used the connector I bought that has 10? Or is it just a matter of finding the right software? Also did you notice there is a second SPI like connector on the board? I have been in contact with Angel before he left for his trip and this is what he advised to trouble shoot

"
You can try to deal with the problem yourself.
1) If the CPU heatsink is getting hot that is a good sign
2) If fans start running after ~ 10 mins., that is good too

If the above is not true then probably something is wrong with the motherboard or BIOS.
If you have problems when 1) and 2) are true, then probably you have a bad BIOS flash. It could be fixed with a blind BIOS flash or using a programmer"

Ok so here's the problem, last tested with E2200 CPU, when plugged into AC power there is no heat coming from CPU and no Fans coming on or HDD spinning, push button of CD rom and nothing, but when on battery only and only if I hold the power button without letting go, then all work but the CD rom, heat from CPU and fans come on, but stil no caps lock or num lock, also when the CPU is out, only on battery, if you push the button is will stay on for a few seconds then go off you can hear the HDD, but no fans, this is only with the CPU out, it's as if the board does not recognize the CPU, even though when on battery only the CPU heats up, which is a good thing, as far as I can see there are no bent pins on CPU socket or Could this still be the BIOS not being compatible with CPU, I guess it couldn't hurt to try a blind flash, like he suggested, which BIOS flash should I use and what should I be able to do it with Alt F2 EZ Flash? Still working GPU, so I would be only able to see if it works if it stays on and the keyboard responds, I don't like to assume, so I'm asking the same power extender board for the C90s works on the C90p correct? Also will a 120 watt PSU be enough to get it to work? That's all I got right now.

I hope this enough to go on maybe we can figure out what's wrong with this board, or what I may be doing wrong. One thing is for sure if this board is defective I'm not risking frying anymore graphics cards in it and as for the C90s I just bought, that card is going to stay in that unit unless I absolutely need to take it out, can't blame me for taking any chances. I used a non power hand drill to drill the holes in the case for ventilation That's all I have right now. Is there any chance that the graphics card is not fried and that the Vbios can be the problem and flash the Vbios like I have read something do with having to jumper the GPU with something I don't remember right now. I did try to bake the two cards and no luck, would a bad Vbios kill it?


Thanks guys for any further help.

 

one other thing I'm trying to understand if the BIOS has never been flashed and it's let's say the very old one 601a, wouldn't it not support anything but a CPU of that time, like say the Celeron CPU, which as I posted earlier I tried and no luck. Then again am I right in understanding that if the BIOS is bad, it won't support any CPU till it's fixed, I.E. flashed again?

 

Good news, I saw the problem where it is .

After your posts I compared the two power extender boards in my C90S and saw that they are different. The one from the working C90S with C90P mobo had a green label that was covering the model written over the PCB which was C90P. The board has additional components and that explains your problem – no enough power juice. The solution is a new C90P power extender board :thumbsup:!

 

I had a feeling that might be the problem, I looked all over and all I can find is a C90p power extender board from China, any idea where I can find one in U.S.?
Thanks

 

Not yet, but I will check out if it is possible a mod of the original C90S PEB.

 

Ok, I looked at the difference and there are two components that are different, also I took out the PCB and tried to power on and it sort of behaved differently, so that has to be it. I don't think I would be able to do the soldering, but hopefully it's not too involved, the PEB from China is $12 + $6 ship and could take up to 27 days to get it. Did you order yours from China? So then would it be correct to conclude that the incorrect extender board is the reason the GPU was affected, if so why wasn't the CPU affected? Using the C90s PCB wouldn't harm the mobo, would it? I really hope this is the cause because I'm going crazy with this!

 

I bought mine from China 3 years ago as a spare one for C90S. Until now I never check it out and I am pleasantly surprised that it is for C90P. Without a proper power the motherboard behavior is unpredictable, especially when I am not fully aware with its logic. There are a lot of factors involved and the right explanation is not an easy task to me. With the new PEB you will be able to kick the bad boy and then update to the BIOS 803.

As far as the SPI interface Angel gave me two pictures with the SPI header #1 layout and the BIOS chip connection specifications (they are common for 25xx). Without the proper SPI layout my programmer was unable to recognize the EEPROM. Your connection cable is using a different SPI scheme, that’s why you can’t reach the chip.

 

Ok, I understand so I guess I will order the right PEB and forget about the programmer since the scheme, is wrong, oh and the other programmer that I bought from same company arrived from China other day, didn't take as long as I thought it would too bad I can't used that too, if only I would have known about the PEB sooner, I would already have it probably, oh well.

 

It sounds silly to be missed that the PEBs are different but I saw it a few hours ago .

To customize the interface SPI cable is not difficult. The easiest and better way is to build it yourself. Just grab a 6 wire ribbon cable with two 6 pins (2x3) connectors. Crimp one of the cable ends with one of the connectors. Connect the other end to the second connector using the SPI schemes from the mobo and the programmer. Check out the cable connection schemes again (be careful with the numbering) and then crimp it with the second connector. That’s it, you are ready. The cable will be useful for Asus mobos. Don’t forget that the BIOS chip is the low voltage version 3.3v.

Parts:

Ribbon Cable - 6 wire (3ft)
Ribbon Crimp Connector - 6-pin (2x3, Female)​

PS: You can use 10 pins (2x5) connector but just connect only the 6 wires according to both SPI schemes.

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.. and Angel’s pictures:

C90P SPI Header Layout
C90P BIOS Chip​

 

Ok so you don't think the wrong PEB could have caused any damage?

 

Of course not!

 

Ok so if it can't cause damage, would you be willing to try an experiment, put your C90s Extender board in your C90p mobo and see if it does the exact same thing that mine is doing, if it does then we know for sure it's only the wrong power extender board,it can't hurt anything right? I will go ahead and order the new PEB, I really want to know for sure, I will have wait weeks for the order, or pay $30 for rush,
Thanks

 

Right !.

Unfortunately I can't do it before to finish ASME 1.0 plus the last modification, sorry. It will take some time. Every step beyond ASME requires precise measurement and customization. The motherboard should be in your hands because there are not available ready to use parts and I’m doing all by myself. It’s a lot of work as I said before when I had no intention for such kind of work.

.. BTW I will try the same programmer soon. This task doesn’t require motherboard to be properly installed.

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Everything will be fine with the right PEB :thumbsup:.
How you can explain the magical recovering of the “killed” 8600m after the use in C90P?

 

I understand what you are saying and I look forward to you final results!

Ok that would be good. so then you will make the cable you suggested I make?

This part I don't understand, are you saying you don't think the C90s extender board killed my good 8600m? I"m confused.

 

Yepp, without the described cable the programmer will not work. The cable should have 6 pins compact connector to the mobo and 10 pins compact one to the programmer. In this way you will never make by mistake a wrong connection with the good damages in result.

Do you have 8600 that was damaged by C90P?

 

Yes, the last 8600 that came in the C90s I bought recently was working fine till I tried it in the C90p, after that it was dead, I don't know if it's fried or just a damaged Vbios, so I still have no working GPU, I have another C90s coming this week with a working 8600, so I will have to use that till I can do ASME and upgrade GPU. On another subject as far as the cooling mod, I made the holes over the GPU on the back of the case and now I read that it's not a good idea on C90s unleashed, so now I will cover the holes with aluminum foil tape, I'm just wondering why no holes? Is is to so the flow goes to the fans? Have you tried the fan control software he recommends? I can't find where he recommends what to replace the fan mesh with?
Thanks

 

I told you more that once that motherboard which is damaging working peripherals is not good! It’s defect mobo! I can’t understand why you are keeping such motherboard.

I am afraid that you will cause more damages if you do not start reading and understand the things before acting. The forums are not the place where you can educate yourself in a field like electronics and after that to solve problems which are difficult even for the professionals with long practice.

In my posts I gave you a lot of links to the NBR threads, members and web sites with useful information containing almost the all answers on your questions. You just need to read it! If that is not enough for you then I can’t help you.

It was not reliable, buggy and I don’t like it. There is a new version ... !?

I am with the original fan mesh.

 

Well my friend once again Astrologically speaking, the moon is in Aries and there is a Mars aspect and everyone is on the war path, I'm sorry to tell you but I ordered the C90p PEB and agreed to keep the C90p mobo and receive partial refund, otherwise I would have had to send it back for full refund and pay for most of the shipping at least a 1/3 of the price of the mobo. So let's pray you are wrong and the mobo is not defective and the problem was indeed the wrong PEB Like I said before we can't rule out other things destroying the GPU, it could have been static, who knows, I think we need to consider the various possibilities and probabilities and not automatically jump to the conclusion the mobo is defective, it could very well be the wrong PEB and I didn't know it. Besides if the board was truly defective, it wouldn't power up at all and that's not the case, so let's just wait and see, will take several weeks, but I'm no hurry, worse comes to worse it doesn't work. I get what your saying about electronics, and that I'm not as educated as most on the subject, nevertheless, I have common sense as most people do and I use my head, unfortunately now owning 3 C90s with a 4th on it's way sometime next week, I really can't afford to walk away from C90 Scheme nor do I care to. On a side note I have something I need to share that happened with the U.S. Postal Service. The C90s was sent Priority Mail (Insured) should have arrived on Jan.2nd, instead I find out from the seller that the Postal Carrier "Accidentally Destroyed" the label and that the package needed to be resent, it was resent and it's coming from TX. except that the cheap USPS, won't pay for Priority and is sending it Parcel Select no insurance and instead of arriving tomorrow or Th. It won't arrive till close to next Tues It would have been shipped by air, but because the USPS is too cheap now being shipped by ground with more possibility of being damaged and no insurance.. I paid for shipping and I have to wait, this is wrong I filed a complaint and it will be investigated, I caution all, to reconsider when shipping ordering something through USPS, to reconsider using UPS FEDEX, DHL or someone more reliable!

 

Yes I would also advise reading the forums over the stars listen to duhai when it comes to the c90.

 

@cyberken

I will be glad to be wrong and will be happy for you to have working C90P motherboard.​

I am taking the criticism and thank you for the attitude!​

I am unpleasantly surprised from you for a second time! I don’t think that I am on the “war path” when I am sharing all what I know and trying to help you with what I can!​

I feel not good reading your previous post!

Good luck!

 

A board can be defective and still power up and kill things quite easily. It can send spikes of current that wear down devices over time or just kill them after a short period.

 

Yeah, you are correct and in these cases you need to be skilled engineer with the right equipment, schematics and components to solve the problem especially for the multilayer PCBs.

I remembered the first words of Angel:

 

Yeah those sorts of faults can be very nasty and expensive, luckily I have not had many.

That sort of issue is likely a replacement job unless you are working on hand built specialist equipment.

 

Hey guys, been a very long time since I've been on here (blocked for spam for unbeknown reason to me). Anyway, has anyone tried a 3650 512MB in a C90s? I've got 2 sitting here and neither work (with the same symptoms). I noticed in this thread that 256MB versions have worked but couldn't spot anything for 512's. I've baked my 8600m a few times now and wouldn't mind getting this thing stable again.

Thanks for any help

 

Hey Fluencist,

3650/512/DDR2 works perfectly on C90S. Can you post pictures of yours? Are they MXM II with Acer or ATI video BIOS?

 

I succeeded in the challenge to run a quad CPU with C90S , Moo-ha-ha. It’s a beta test still but it works and seems that I have the most powerful C90S .

 

Lol but how fast?

 

It would have been easier with C90P Just kidding, congrats!

 

Now we just need some screen shots and benches

 

@triturbo

Thanks!

With the right CPU and Heatsink mod in C90P I have more room for overclocking. My goal is to be reached 3.6 GHz .

 

Sorry about the delay in my response (and thanks for yours), I've trawled through this forum, and the card I have has a red PCB, along with the diagonal BIOS chip, I put it in (with slight modification so as to make sure the heatsink doesn't interfere), but it just doesn't want to know. This is the second one I've tried now, just wondered if you might be able to shed some light on it....

Congrats on the getting quad working btw! Which chip did you use?

 

I don’t know why you have this problem with two cards. If their video BIOS is not locked to a specific laptop manufacturer and you can’t see the POST screen then probably something is not right with the MXM II slot or the motherboard.

If I were you I will try next:

1) Remove the AC power
2) Remove the Battery
3) Unplug the video card
4) Check out if the video heatsink is properly mounted. This is crucial for the card!
5) Clean the video card contacts with Isopropyl Alcohol and wait for 60 seconds
6) Put back the card into the video slot
7) Do the same for the RAM modules
8) Attach the battery and AC power
9) Turn on the laptop. It should be working now.If not then press the reset button (under right corner) and try again.​

Let me know what is the result.My video card is exactly as this one with Acer BIOS. It works without problems on C90S and C90P.

Thanks! The used CPU is QX9650 and I need one more .​

 

Yup, tried all of that but no dice. I even removed the BIOS battery in the hope it'd work... I'm running the 1002 version for the sake of my E7500, is that likely to affect it perchance?

 

That's extremely important. I've finished mine and I'll try to test it with water in the upcoming month So far it's not bad on air alone.

Good luck :thumbsup:

 

@Fluencist

You should use the BIOS 1002a that supports E7500. With version 1002 you can’t run properly a Wolfdale’s CPU. Try to update the BIOS from Angel’s site or use your original CPU.
​

@triturbo
Yeah, the heatsink is the key. I also will surprise you with a killing CPU/GPU heatsink extender from pure and beautiful copper, a low speed fan and placed in the CDROM bay . My intention is to put this baby into any laptop with CD/DVD and with a little work to be reached better cooling effect. When I’m ready I will post the pictures and screenshots with the temperatures.

I did a CPU mod that dropped the CPU temperature with ~ 10*C. It was very difficult to remove the CPU’s heat spreader and in the same time the result was unbelievable. In front of me is still a lot of work to adjust my entirely new CPU heatsink to the CPU crystal. I think to use Liquide Metal as a TIM. I am very impressed from the result of this guy:

<iframe width='480' height="270" src="//www.youtube.com/embed/1DQS9QQA0Q8?rel=0" frameborder='0' allowfullscreen></iframe>​

The idea for water cooling is great and cool. For me this is extremely difficult and challenging task . If someone can achieve this goal I know that you are the one :thumbsup:.

In the laptop ocean your Acer is a blackfish while mine Asus is just a poor shark .

 

It does have an impact which is why they are not included on notebooks (which use lower pressure heatsinks anyway.

 

I'm looking forward to it. Funny thing is that I was just looking for ODD caddy fan. Sadly I can't find the topic it was mentioned. It was long time ago and there were 4 versions - PATA and SATA with both exhaust and intake fans for each one. I guess they weren't very popular and I can't find them anywhere

Tell me about it. Making the heat-sink and the core (in my case the GPU's core) to meet just right was nearly impossible.

I'm kinda afraid of those TIMs.

Thanks. It's not exactly like that, we both do our best to keep our machines kickin' and that's it

EDIT: Found it. Here it is. Nowhere to buy though.

 

On many of the systems I have worked on getting the thermal pads just right is vital.