Lenovo ThinkCentre A55 9641-7QG E7400

[seppok2]

There is a similar request, http://www.bios-mods.com/forum/Thread-So...ode?page=4

Would it be possible for an A55? Original CPU is E4400 (65nm) and I'm trying to replace it with E7400 (45nm). It boots and I can access BIOS settings but it doesn't start to load an OS. I think the chipset is 946GZ. Original BIOS (2QKT29A) can be downloaded from http://support.lenovo.com/en_US/download...D=DS002180

[TorpedoJavi]

Hello, first sorry for my poor English.

I'm suffering the same problem. It does not boot when I change te processor, it shows the microcode error.

The BIOS is here:
http://support.lenovo.com/en_US/downloads/detail.page?&LegacyDocID=MIGR-67223

This BIOS is for ThinkCentre A55 (type 9636, 9638, 9640, 9641) / M55e (type 9300, 9301, 9642, 9643, 9644, 9645) systems.

I need update microcode, but for a Core2Duo E7400 or a Pentium Dual Core E6600

I've found a similar post here, but my system uses other BIOS:
http://www.bios-mods.com/forum/Thread-So...ode?page=4

Core2Duo E7400 SLGW3
http://www.cpu-world.com/sspec/SL/SLGW3.html

Pentium Dual Core E6600 SLGUG
http://www.cpu-world.com/sspec/SL/SLGUG.html


Data of Pentium Dual Core E6600 obtained from another computer.
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Pentium® Dual-Core CPU E6600 @ 3.06GHz
stepping : 10
microcode : 0xa07

Could anyone help us?

Thanks in advance.

---

I will post the unmodified BIOS:

- Extracted BIOS ROM image

  BIOS_2QKT29A_2QJT29A.zip (Size: 675.9 KB / Downloads: 17)

- BIOS from Lenovo

  Lenovo_2q_BIOS_downloads_from_Lenovo.zip (Size: 3.48 MB / Downloads: 14)

Thanks in advance...

[TorpedoJavi]

Possible solution.

I will try it

http://www.bios-mods.com/forum/Thread-3-...otherboard

I will try with these files...... replacing other microcode...

  1067A.zip (Size: 8.34 KB / Downloads: 11)

[TorpedoJavi]

I tested and It does not work.
I think only updates microcodes that are in BIOS.

I need to modify the ROM BIOS image $image2q.usf

Could someone help?

Where can I find information about modifying Lenovo Phoenix BIOSes???