Having problems with your IBM ThinkPad T42 Notebook ?

System won't boot - show's green battery icon only

\015 When i press power ON button it comes on but will not boot, one of the green LED before the battery indicator LED will be ON but the LCD remain black.The green LED on the left of the battery indicator (just before it) shows up when I press the power on switch the laptop. I can reset the green battery LED by removing the power cord, removing the battery, put the battery back in and put the cord back in. When I again press power on, this LED goes off. I tried replacing the battery, swapping the RAM modules and trying them one at a time. The system will not boot, not even into BIOS.\015

Answers :

Hello,
\015\012
\015\012Contact with notebook repairing engineer. Might be coz of some short circuit, BIOS corruption or any malfunction of the hardware.
\015\012
\015\012
\015\012Regards;
\015\012Hassan
I had same problem happen to me also on T42 and until i change the RAM under keyboard was no IBM logo or Bios post at All. after that start working normal again.I recommend using the IBM hardware manual, available here:
http://www-307.ibm.com/pc/support/site. ... MIGR-46464
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