Did you check if the fan is spinning? Is getting hot in the upper left corner?

I never buy a cmos battery from ebay or computer parts shop because they might be from an old stock, it doesn't matter the exp date, it must be fresh(manufactured no more than 12-18 months ago) because even if it's not used it drains itself, using old stock batteries you have to change them more oft...

I managed to downgrade the E.C. You have to install previous versions of BIOS packages step by step starting with the previous one. spsuiy61(bios v1.22 ec v1.06) then spsuiy60(bios v1.21 ec v1.05) then spsuiy59(bios v1.20 ec v1.05) etc. From spsuiy56(bios v1.16 ec v1.03) to spsuiy53(bios v1.13 ec v1...

I found out that hundreds of thinkpads/mainboards had been thrown away because of this problem, not only t2x, even ibm technicians couldn't find a solution for these simptoms, they simply change the mboard. The heatsink and thermal interface are ok. When i power on the notebook the fan starts for 10...

I've been searching the web for 3 days to find a solution. My thinkpad is like new and and i want to give it to my uncle, it's a great machine for browsing the web, email, office, music and video playback even if it's 12 years old. Asa a last resort if i can't fix the fan i'll wire it to 5v on the m...

Thank you very much for your response. I have already tried all these steps and nothing worked. The thermal pad is new, i'm going to put a t21or 22 heatsink for better thermal transfer if i fix the fan starting problem. Regarding the bios update, even if i update to an older version the ec remains t...

Same problem reported by others and there is no fix: http://forum.notebookreview.com/lenovo/8788-t20-cpu-fan-problem.html http://www.tomshardware.co.uk/forum/28403-35-help-thinkpad-problem http://forum.thinkpads.com/viewtopic.php?f=28&t=87815 (even in bios the fan will not start if the cpu gets hot)

Hello everyone! Can anybody tell me how to downgrade the embedded controller version on thinkpad t20? I upgraded a t20 to bios version 1.22, ec firmware version 1.06 and the fan is not starting when the cpu is hot. The problem of fan not starting on thinkpad t20-21-22 and others is well known, it se...

Can anybody tell me how to downgrade the embedded controller version on thinkpad t20? I upgraded a t20 to bios version 1.22, ec firmware version 1.06 and the fan is not starting when the cpu is hot. The problem of fan not starting on thinkpad t20-21-22 and others is well known and nobody seems to kn...