*** Official Clevo P870DM/Sager NP9870-G Owner's Lounge - Phoenix has arisen! ***

Download the manual and take a look to se if you have a keyboard shortcut to reset to factory default settings. But clearing the Nvram on the old way as you did, should do the trick for entering bios if the screen is ok. Start with download the manual if you don't already have done it.

 

More black screen with Windoze X, but with MSI http://forum.notebookreview.com/thr...cussions-lounge.794968/page-333#post-10453301

 

No, I don't have any image,but I see the HD blinking and the windows sounds after login, but nothing on the screen. I did the normal reset process, but I didn't do any F+? methods and I don't know how to do it.
Is there is any setting on the BIOS can effect the screen?
My BIOS is Prema, what do you mean about Stock? if you mean that I have to flash the Stock BIOS then I have it but I don't know how to do it without seeing anything on the screen.

 

I just realize that you want me to remove the cable from the other side, this make more sense now if you send me this picture before that, will save me almost 2 hours and a lot off risk . But I'm learning some new stuff and I'm happy with it after all.

 

i wonder where this 1080 can be had?

 

It's the 1080 from the GT73VR.

 

Sounds like the same W10 / Precision X fiasco we experienced with the r2.

 

Bricked screens is the norm nowadays http://www.guru3d.com/news-story/sony-bravia-smart-tvs-bricked-after-android-lollipop-update.html

 

Maybe this kind of issues should be fixed by BIOS modes, Windows shouldn't access up to that level and it must be some coding in the BIOS to give more protection to the Hardware, specially we are facing many viruses attacking our PC's OS and even deleting BIOS in some case's.

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Well ... only fudged it together after realising you were on the 'extended tour' .

Now that you have easy access and know the exact lcd (an LG LP173WF4-SPF1); please list the systems you might able to borrow the screen from. Then we'll know for certain whether it is the panel or something else.

Two changes that came with Windows 8 onwards might also be to blame;

1. The new, über I2C driver, making read+write possible from within the OS.
2. MS Hybrid Graphics gpu switching.

Either can explain the new black screen issues. A cmos reset or, better, a full bios+ec reflash should fix it, but if it is new-fangled edid bricking then only reflashing the edid or buying a new screen will help. It's a bit foggy at this time until someone can confirm a new panel fixes it and/or manages to pull the edid and, preferably, the rest of the firmware from an affected system's panel.

 

When you first power on the system....Can you get into the bios?

Edit, nevermind. I see where you tried that....

What you can also do is put the machine in a way to see if you can see the screen. If for some reason the system turns off the backlight, you would also have a black screen, but could still see the os...just not very easy...

 

NO... Only black screen.

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I already focused a flashlight to the screan but nothing I can see, I'm sure that the OS is running behind that black screen, even no signal to the external TV. That problem happened after installing the nVidia drivers within fresh windows installation proccess, once I restart the laptop then nothing on the screen.

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That happen to me a few times now, but my screen would only go dark after trying to boot the os.

What happen was the driver was not fully installed. And one of the cards was disabled. Thus causing the black screen for me.

 

Do you suggest something I can do? I'm already in the computer market, after 2 hours searching I found one only one screen can fit it will cost almost $160 the same online found it fir only $50 .

I need to take my decision now buy it or try some solutions 1st? please advise

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Tried swapping the GPUs around or just leaving one in the master slot?

 

Yes I did that as well.

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I'll go for the new screen from the local market with that super price just to save time. Hope that the problem is only broken screen.
I need to reassemble the whole laptop then I will try the new screen maybe late today or tomorrow night.
I'll update here with the result.
Thank you all for your kindness and support, really appreciate your care and help.
Regards.

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I got the new screen attached it and I got the same black screen




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Either it is the display driver initialization as John pointed out or the display cable is dislodged. The latter will need a pretty immaculate teardown. Happened to be once on my DM1 after i threw my laptop on the bed

And since you have already a new screen, most probably it is the display cable being dislodged on the motherboard.

Here are 2 videos if you want to take it apart -

Spoiler

 

Thanks, I already did that and the cable is attached will from both sides, unless the cable it self is damaged, no way to find the cable in our market, I have to order it and wait for almost 3 weeks to receive it. until then I'll be happy if someone had any suggestions.
I feel that the BIOS maybe has an issue , if there is any way to flash it without seeing, somehow maybe it will fix the problem.

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Do I have any options guys? can anyone tell me what is happening?

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I have **** problem... Sitting for 1h with **** DRIVERS... that suddenly disappeared.

I found in device manager:
Windows has stopped this device because it has reported problems. (Code 43)
What the hell? Reinstalled drivers about 10 times, clean installs and sweeped... still same. What the heck? GPU: GTX 980M with stock vBIOS/stock clocks... temps are fine.

 

Tried older drivers?

 

It could be an issue with the card if a clean install is not working.

 

Tried everything...

Now tried to launch any game to test...
1) World of Warships - crash before launch, can't launch and allocate memory without drivers (that are disabled by OS)
2) GTA V works with 0.000000000fps accelerated by CPU, GPU stays idle.

HWInfo shows only GPU temp, no other info... no vcore, cpu core, mem speed, etc...
I even downloaded nVidia inspector and every field is blank...

 

Might want to try the card in a different slot maybe. If that also doesn't help. Good chance there is something wrong with the GPU.

 

You mean put it to the slave MXM slot? I have heatsink for it and fan but I have no more thermal compound to do this.

 

Have you tried to start up in safe mode in blind? Not easy and will probably not make a difference. But still. Started up with a clean drive after reset Nvram? Tried reset nvram a couple of times in a row? Only with a boot between.

 

I'm always doing restarts or mostly shutdown and then clean launch.
Didn't tested safe mode.

Im currently trying to launch nVidia Control manually via .exe but program doesn't even respond to clicks/run as admin... No reaction at all.

Every render test (currently GPU-Z one) is rendered by... CPU...
GPU temps stays hard at 44-45*c... And GPU-Z shows 0MHz/0MHz.

Tested Safe Mode: nothing...
Again I've done 3 or 4 driver reinstalls... same.

I guess it's RMA time... 1 year even not ended and 2nd 980M dead... Screw you Clevo for GPU quality. :/

I hope that 980M isn't EOL status yet...

 

It will be weird that a cable suddenly breaks down, or both of your GPUs died.
Another way to debug is to try on a spare/different card.
Since you have tried a new screen and still got black screen on boot, I am guessing is it possible that Windows or nVidia driver corrupted the vbios or part(header) of the vbios. I got completely black screen on boot before after I used the vbios that I modified/corrupted. I could hear or feel the system launched into Login screen.

 

In which case: blind flash vBIOS?

https://www.techinferno.com/index.p...oot-blind-flash-a-non-booting-gpu-in-windows/

 

Good idea, I have a 970m card on my wife's laptop, I'll test with it and see what will happen. I'm not afraid... but I'll do that when she is not home just to be more comfortable.

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Thanks for the link, I'll do that after trying the 970m card from different laptop, if it's working, then we know now that the problem with the GPU's. Then start all scenarios related.

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Yeah, try that and see. If the 970M does light up your screen, then I will recommend to shut down your PC before Windows showed up, to prevent any damage to it.
Since you are taking out the 970M, you can also plugin your 980Ms into your wife's laptop one by one and make sure that they are still working as usual.
If this doesn't solve the problem, then I guess I would tried a new cable. The last thing I would tried will be a new motherboard, but that's too much of effort and spending...
Don't think it's the BIOS/EC problem though, but you can still list it into your testing list.

 

I just finished, after using the 970m on my laptop I got the same black screen, all my gpu's working on my wife's laptop just fine.
Tested:
1- it's not a screen/firmware problem
2- it's not a gpu's or vbios problem

Not tested
3- Bios problem, I need to try the F+? recovery method, please I need a trusted link to how to do it.

4- Cable problem, it will need more than 3 weeks to get the cable , and I'm sure that's not the problem.

5- Motherboard problem, and I think this is the most reasonable reason for all of this, if I flash the bios with F+? method and still have the same problem, then the MB has to be changed, hope that I can find someone to help me with @Eurocom Support to have it replaced covered with warranty.

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Attached the msi 970m I tested in my Sky X9E, has ASIC %78, very nice card came with the msi gt72 dominator pro.
I will steal my wife's laptop until I fix mine, I don't know if I can do that yet



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3) NVRAM reset on DM1. I don't think you can reset nvram with key command. Only with newer EC (And I don't think you have a newer one than the one you already have from @Prema mod)

 

Good catch. I'll also add, make sure the CMOS is actually resetting. I've had it not do it before. I usually take the battery out, then use a paper clip to connect the metal terminals and hold it there for a few seconds.

 

Pressing the power button also grounds everything doesn't it?

I would wait longer than 2 seconds (like in that video). Lots of capacitors on the board would still be holding charge longer than that. I would be removing the battery too. Maybe things have moved on but 'back in the day' I remember being scared of the risk of just dropping a screwdriver in the wrong spot shorting something and making the magic smoke.

 

I already did that many times and I have the same result "Black screen"

 

If I'll need a new Motherboard, and Eurocom will not cover me within warranty, can I buy KM1 motherboard instead of DM1?

I found those links for DM1 MB:
http://www.ebay.com/itm/NEW-MAINBOA...364721?hash=item4650be6131:g:mn8AAOSwwo1Xdu4u

https://www.amazon.com/CLEVO-P870DM-G-Sager-NP9870-Motherboard/dp/B01LOEVVT4

http://www.eurocom.com/ec/upgradepricelist(2,349)ec

 

KM1 motherboard... Nope

 

Hmmm... more likely DM2/DM3 board + modding the chassy, but KM1 rather nope.

 

The whole package need modding and I think this will be expencive + problematic. E.g DM2-3 use 12v fans vs 5v in Dm1 +++

 

Then, I'll just try to get the DM1 MB, any recommendation where and how much? even used I don't care.

 

I really don't know. Haven't needed search for it. But maybe also ask in the OC thread. Most of the Clevo owners visit there

 

@Dr. AMK https://www.amazon.com/CLEVO-P870DM-G-Sager-NP9870-Motherboard/dp/B01LOEVVT4

http://m.ebay.com/itm/NEW-MAINBOARD-NOTEBOOK-CLEVO-P870DM-G-WARRANTY-12-MONTHS-/302002364721
Just use Google to find what you need and ask brothers if you have questions before the purchase.

 

Ok, I've send few hours ago mail to Hyperbook about my GPU. Let's see if they will have idea how to fix this. I still hope that it's just mirror trollish failiure of drivers or other minor stuff... But inner me says "It's dead".

At least I can use my P870DM normal for internet, youtube and mail since CPU renders everything and I have no black screens, bsods and artifacts...

 

I notice something very strange, when I install the RAM under keyboard the system boot with black screen, but if I install the RAM on the other side nothing happens at all, no booting no response to Num Lk nothing.
Is this mean anything?

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