Need BIOS Dump/ROM for Lenovo Thinkstation p500

[AHmad_Salal]

Hello all,
I have a Lenovo Thinkstation P500 that is stuck at post with no display, it happened after I changed the memory timings in bios. I can not clear CMOS using the jumper on the motherboard, also tried re-flashing bios suing a USB stick but it also doesn't work. The only solution that I can think of right now is re-flashing the bios chip using an external programmer but the problem is that I don't have the bios dump of p500 for flashing externally and I don't know the location of bios chip. If someone can provide the bios dump and bios chip location it would be really helpful.

Here are the details of my machine (Lenovo Thinkstation P500)
Processor: Intel Xeon E5-1650v3
RAM: 2x8GB DDR4 2133MHz
GPU: AMD R7 250 1GB
Machine Type: 30A6
S/N: PC0APW73
Motherboard: Lenovo Scorpius rev. 1.0
BIOS Version: A4KTACA

[SMDFlea]

Hello all,
I have a Lenovo Thinkstation P500 that is stuck at post with no display, it happened after I changed the memory timings in bios. I can not clear CMOS using the jumper on the motherboard, also tried re-flashing bios suing a USB stick but it also doesn't work. The only solution that I can think of right now is re-flashing the bios chip using an external programmer but the problem is that I don't have the bios dump of p500 for flashing externally and I don't know the location of bios chip. If someone can provide the bios dump and bios chip location it would be really helpful.

RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
https://www.badcaps.net/forum/troubl...before-posting .

You MUST:

• Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://badcaps.net/forum/showthread.php?t=88758 )

[AHmad_Salal]

[*]Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://badcaps.net/forum/showthread.php?t=88758 )

Here are the details of my machine (Lenovo Thinkstation P500)
Processor: Intel Xeon E5-1650v3
RAM: 2x8GB DDR4 2133MHz
GPU: AMD R7 250 1GB
Machine Type: 30A6
S/N: PC0APW73
Motherboard: Lenovo Scorpius rev. 1.0
BIOS Version: A4KTACA

[hoaca388]

Backup bios file ?

[AHmad_Salal]

Backup bios file ?

I don't have the backup bios file but I tried reading the bios chip using CH431 mini programmer, not sure if was a good read or not so I did it twice. Dumps attached (could not upload .bin so uploaded .zip containing two dumps).

P. S. Suspected bios chip located (please confirm by looking into the dump contents), It's a MX25L12873F

[AHmad_Salal]

Dumps attached (could not upload .bin so uploaded .zip containing two dumps).

Is there a way to reset/change the bios settings to default in the bios dump file and re-flash the dump with changed settings? Will it work?

[hoaca388]

Is there a way to reset/change the bios settings to default in the bios dump file and re-flash the dump with changed settings? Will it work?

CCC

[AHmad_Salal]

hoaca, please upload the correct file.

[AHmad_Salal]

CCC

Can't interpret what you are trying to say and what to do with this file (I am newbie in the bios field)?

[hoaca388]

https://www.badcaps.net/forum/troubl...21#post1622421

[AHmad_Salal]

https://www.badcaps.net/forum/troubl...21#post1622421

Is there a problem with my dump? I already went through this page

[SMDFlea]

CCC

something wrong there hoaca , 12.5KB compressed

[AHmad_Salal]

something wrong there hoaca , 12.5KB compressed

I think it's some kind of script, I opened it with notepad and it looks like a script to me

[AHmad_Salal]

I tried reading the bios chip again today (file attached) and guess what? The MD5 sums of this file doesn't match with the previous dump that I created yesterday and it is quite confusing for me. Am I not installing the adapter clip correctly or have the contents of chip changed overnight?

P.S. CR2032 coin cell battery is not installed in the motherboard.

[Maxpower3]

bios changes each time you reboot or change settings. do not use the clip is the best solution

[AHmad_Salal]

Comparison attached in my next post (#14).

[AHmad_Salal]

I tried comparing the both files and found out that some entries in Intel Image-->ME region-->MDES have changed (images attached). Is this normal?

P.S. MDES is ME debug event service.

[AHmad_Salal]

How can I reset the setting that I made in the BIOS in this dump, I think I need to clear the NVRAM but I don't know how to. Can someone guide me on how to clear the NVRAM in a Lenovo BIOS?

[hoaca388]

How can I reset the setting that I made in the BIOS in this dump, I think I need to clear the NVRAM but I don't know how to. Can someone guide me on how to clear the NVRAM in a Lenovo BIOS?

My mind is not stable these days.

[zaheer118]

hello hoaca388 is this file working ok ??????
if not ok please build my old file
no display machine power of after 1minut

[SMDFlea]

RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
https://www.badcaps.net/forum/troubl...before-posting

You MUST:

• Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://www.badcaps.net/forum/showthread.php?t=88758 ) ,The serial number, make, full model number, motherboard model and revision (except QR codes) must be written/typed at your request as per the rules. Not as a picture, part of the file name and so on.

[AHmad_Salal]

My mind is not stable these days.

Sorry for the late reply but I ended up replacing the NVRAM region of my BIOS dump from a fresh BIOS, re-flashed it and it worked. Thank you everyone, a special thanks to hoaca388.

[zaheer118]

hello hoaca388 is this file working ok ??????
if not ok please build my old file
no display machine power of after 1minut

lenovo thinkstation p510
s/n pc0qryq7
mt-m 30b4-sourop
mother board scorpius rev 1.1
old file attach
MX25L12873F_20240201_2342 old.

[SMDFlea]

lenovo thinkstation p510
s/n pc0qryq7
mt-m 30b4-sourop
mother board scorpius rev 1.1
old file attach
MX25L12873F_20240201_2342 old.

Off Topic, this thread is for the P500 .Post your request in the P510 thread -> https://www.badcaps.net/forum/troubl...tion-p510-bios