Your AC adapter is not properly grounded and/or has the line and neutral switched. Has someone cut the ground off the line cord, or are you using an adapter to plug into an old style non-grounded outlet? It could be a fault in the AC adapter, by my guess is a hacked line cord, plugging into an non-g...

I'm not sure where your limit came from, but my first guess is the Thinkpad BIOS not the latest. I just installed a 20GB drive in a straight 600, and I was running into the same trouble until I updated the BIOS. There are also HD software updates available on the IBM site as well, but the drive I ha...

First, I have read through all the posts in the 600 upgrade area, but I still am not clear/ready to buy an upgrade because of questions. I recently acquired a base model 600 (2645-51U), it currenlty has a PII-266 and if the price is right, I would like to take it to the fastest processor it will sup...