T9300 downgrade to T7500 problems, help!

I have a dv2700t w/t9300 that I need to put into another system. I'll be transferring the t7500 from that other system (dell xps 1530) to the dv2700t.

I took out the t9300 processor from the dv2700t and replaced it with the t7500 but the computer didn't even boot up! So I put the T9300 back it and it booted up no problem.

By the way, I took it apart and put it back together 5 times with both configurations just to make sure, and same results. Difinately a software issue. But, how can it be the bios when the new bios are supposed to include support for the T7XXX series and the T9XXX series?

Can anybody solve this mystery for me? Thanks!

BELOW are pictures of the CPU informaion.







Does anybody know the downgrade doesn't work? Anybody know what I can do to make it work? Is software needed or is it a hardware problem?

Anybody with information on CPU stepping plz help. Thanks!

 

I'm afraid I can't help you, but maybe your laptops feeling insulted at being made slower and even worse it knows its own processor is going in a Dell !

 

Did you try reseating the T7500?

 

well...it could also be that the operating system is now cpu specific. configured and updated while having the t9300 in place and when you went to downgrade it...you os is looking for the security tied to the t9500. (speculation of course)

1: you can try putting in a blank hard drive and see if you can attempt to load a new copy of windows.... if this works. take drive out and put your old hard drive back in.

2: and if it does work, then you can boot your t9300 up, then do an os upgrade. make sure to get your ms key code first. when the computer goes to restart, turn it off. replace the t9300 with the t7500 and with any luck...your op will be repaired with the old cpu back in it's place.

 

I don't think it can be the OS however I will give it a shot. Why? Well, it won't even boot up, and when computers boot up they load the bios then they load the OS. OS is only secondary to the boot. So, the problem can't be the OS, it has to be a BIOS issue, but I have the latest bios.....man this is such a problem.

Yes and I have tried reseating it 4 times...no avail.

Has anybody done this with success?

 

If it's the OS, the error would occur after the BIOS appeared.

 

ah.... i thought you had gotten past the boot screen, but not the os screen.
i was going by this (Difinately a software issue) which was posted earlier...

did you try resetting the bios to default or reverting the bios back to it's original bios date?

or pull the cmos battery out for about 10 minutes, with the laptop unplugged and laptop main battery out.

do you see any lights that stay on or constanly blink for that matter, when you boot the t7500?

do you hear any strange noises?

is the fan still spining?

are the drives spining?

try reversing the memory or even taking it out and trying one stick at a time.

try removing the wifi card from the mini pci slot as well.

i know these are probally not the susjestions you want to hear, but these are some of things i would try.....it cant hurt....

 

My opinion is that you should make sure (in the BIOS) that it recognizes the new CPU. If you can enter the BIOS and see your new CPU recognize, then you can be sure it's an OS issue. To try that, get yourself any Linux Live CD (ubuntu for example) and try to see if the computer run, or else, try inserting a Vista installation disk and boot from it (Without reinstalling of course).

But if you power on your laptop and all you receive is black screen, then your problem is with the hardware, and there my friend there is not much you can do. But this is all my humble opinion... Good luck!

 

yeah, it's not even getting that far....

 

Did you try to put the T9300 into your DELL-machine? What is the result?

 

T9300 Works perfectly in the Dell, absolutely no problem. T7500 when I put it in the Dv2700t from the Dell xps 1530 doesn't even boot up. I hit the power button but the light doesn't even come on. NO power goes to the system. I then replaced the T9300 back into the dv2700t and voila, it works perfectly. I repeated this 4 times and same results.

and...I put the T7500 back into the dell, and still no problem, works perfectly. Definately not a processor issue...Has to be bios, but why?

oh yeah and by the way, it is SUCH A PAIN to take the Dv2700t apart. you literally have to rip apart the whole computer mother board everything just to get at the processor. such a pain...

 

Does the T7500 still work in the Dell system?

Maybe try a different BIOS as well.

 

That's great to hear as I have ordered T9300 for my 8710w and with your thread started to think that it might not work in my 8710w, but looks like should be OK. It's a good thing that it is very easy to reach the processor in the 8710w, not like in dv-series. Thank you for your answer.

 

SLADM 2.20 GHz T7500 N/A 800 MHz 65 nm G0 4 MB Micro-FCBGA
SLA44 2.20 GHz T7500 N/A 800 MHz 65 nm E1 4 MB Micro-FCPGA
SLA3N 2.20 GHz T7500 N/A 800 MHz 65 nm E1 4 MB Micro-FCBGA
SLAF8 2.20 GHz T7500 N/A 800 MHz 65 nm G0 4 MB Micro-FCPGA

SLAQG 2.50 GHz T9300 N/A 800 MHz 45 nm C0 6 MB Micro-FCPGA
SLAPV 2.50 GHz T9300 N/A 800 MHz 45 nm C0 6 MB Micro-FCBGA


i think maybe your problem is here. before i could upgrade my chip, i had to make sure that the stepping would be compatable. i went from a t5450 with a code of SLA4F to a t9300 code of SLAQG. you may need to call intel to find out for sure.....

which chip do you have?
i want to say the sla44 is the correct down grade model, but that is a guess...

 

how do I check (look at the chip?), and what do I have to do to make it work?

 

It's written on the CPU. Have you tried an update of bios on the HP? If not, put the 9300 in the HP, make the bios update and give it a "Restore Defaults" so you reset the bios. After that try the cpu swap again.

 

hmm...i'll try that out thanks.

Seems like the first thing that should be done is a bios reflash to the proper bios, but it just seemed to me that since this bios supports penryn, its an all inclusive bios that should support the T7XXX series because there is only one set of bios I think for this line....

 

It may be the last version that you have, but you should check it out anyway on their website.

 

look at the chip is correct.

and as far as make it work...i dont think you can if it's the wrong stepping.
that's why you can call intel and hopefully they will have the correct fix for that, if there is one.

 

did you ever get it to work????

 

no, it never worked...

 

did you find out what the code was on your cpu?

 

I wonder if the T7300 off my 8710w will work in your's DV-laptop.

 

Updated with pics of stepping configurations in 1st post. Bringing this thread back to life because it's still a problem - now I have more information to solve this problem.

People with CPU stepping knowledge, help!

 

never worked huh....then it is the stepping. and cant be done..... im affraid....

 

Since it did not even post at Bios screen it could be a voltage issue.
Maybe the system is configured for a lower voltage only.

Did you try different configuration of the RAM in different slot ?

 

No actually, what would a diff configuration of the ram in a diff slot do?