Thinkpads Forum

I replaced the T2500 in my T60p with a T7600 and when I try to start it, it runs for a few seconds then shuts off, without any beeps. Some times the fan continues running, some times not.
From Belarc, the unit is a 2007FHG, Bus Clock: 167 megahertz
BIOS: LENOVO 79ET65WW (1.09a) 07/27/2006

TIA

You need to update the BIOS first (with the T2500 back in) to V2.27
http://support.lenovo.com/us/en/product ... s/DS013722
Burn the downloaded .ISO with a program like ImgBurn to make a bootable CD.
After the update, put the T7600 back in (with fresh thermal paste!) and it should now work.

Thank you

I upgraded the BIOS and replaced the CPU, and all seemed well. Then I used NHC to undervolt, and at a certain point the system froze (don't recall if it was BSOD or a failure during NHC tests). Since then, the system usually BSODs during startup. A few times it worked for a minute or two. Initially there were a few different BSOD error messages, but now it's always "Check for viruses on your computer. Remove any newly installed hard drives... Check your hard drive..."

What I've done:
Ran the BIOS HD test.
Set BIOS to run the memory check on startup.
Used Startup repair to "repair the system", and to restore to a previous point.
Put the HD (an OCZ SSD) in another PC and renamed the NHC.exe file so it wouldn't run on startup. Also ran a thorough disk check.
Booted into safe mode with command prompt. The system freezes after loading CLASSPNP.SYS.
Tried both AHCI and Compliant SATA modes

More: On one of the startup repairs, I noticed that Windows was being reported as on D:.

OCZ does not have the best of reputations.
Apart from that, UNdo that undervolting and see how it then goes.
Also, your CPU might have been overclocked by a previous owner...

OK, after a lot of work I think it's fixed. What did it was editing a few registry keys related to the hard disk, as detailed in:

http://www.sevenforums.com/bsod-help-su ... 00000.html

On restart, the unit installed the IDE and ATA hard disk device drivers. Another restart, and things seems good.

Along the way, I found a well-written list of Windows repair steps:

http://www.sevenforums.com/tutorials/21 ... -boot.html

The T60p is noticeably faster. Startup to Firefox appearing takes 40 seconds instead of 50, Youtube HD videos run mores smoothly with about 10% less CPU, and switching tabs and running certain complex web pages in FireFox is snappier.

Dump Firefox, install PaleMoon (32-bit) instead, in combo with Firemin Beta
https://www.palemoon.org/
https://www.rizonesoft.com/download/firemin/
It'll run much better.

I heard about FireMin from you, and it's amazing. So I'll check out PaleMoon.
If it runs most of my FF add-ins, and if it doesn't constantly hit the disk, I'll switch.
Thanks.

Palemoon works with Ublock Origin and Noscript, but I haven't yet looked for a solution to websites telling me I'm running an out of date browser. Depending the site, they may not let you use their service.