Hello all. Now I know that a T43 is obviously not a mac but I trust the advice of macrumors members so much that I want to ask this question here. I have a question regarding my thinkpad T43. I had it for about 36 hours and I was installing some drivers when the computer went to a blue screen and would not boot to windows anymore. I attempted to re-install XP pro but it would not read the CD and kept giving me read errors. I attempted to use my external DVD-RW and it had read errors too. I then tried to use my Rescue and Recovery CD and restore a backup point from a few weeks ago (when I had my first T43 that was replaced). The backup would load but when windows went to boot all I got was a blue screen again. Now, I installed an 80GB 7,200 RPM hard drive on the computer when I got it and loaded XP pro. Could my hard drive have killed the computer?? I removed it an put the factory drive back in as well as factory memory. The problem still exists. I even tried different memory to be sure the RAM sent by IBM was not bad. Problem still exists. Has anyone had a similar experience? It seems my motherboard died (IBM said today they replaced the mainboard so this is the case so far) and could my hard drive be to blame? I'm getting it repaired and when I get it back should I not put my 7,200 drive back in it? When I got the blue screen I was removing the IBM thinkvantage password software so could that have something to do with it? Sorry for all the questions just trying to figure out what happened and if it has happened to anyone else. Also, is there any way to get the computer to stop telling me I have a non-IBM hard drive in it at startup? I keep getting an error message that says I have an incompatible hard drive installed. Thanks.