I Have a Dell Vostro 1400 Notebook. About 6 months ago the CPU fan cooler stopped working but I kept using it anyway and I didn't pay too attention to it. I noticed it because the temperature was getting higher than usually. I worked with my laptop like 1 month or so without a working fan then I stopped using it at all. Last wendsday I got myself a new fan cooler so I replaced it for the old one and I turned my laptop on but when it passed the XP logo the screen went black and it just stood there, it didn't get it to the OS, so I just formatted it and installed XP. The whole installing process went fine, then I installed the video card drivers and restarted the OS and once again it got stuck at the black screen. If it boots in VGA MODE it works normally but when I try to change the screen resolution it gets stuck at the black screen. If I try to make any kind of change to the video settings it gets me the black screen. The whole system freezes. It is not a driver problem because I'm using the same one I had installed before. I think it is either a display problem or a video card problem. I think it was because of the overheating during the month I was using it without a working fan but i'm not sure. Right now I can use my laptop but only in 640x480@60hz and 8 bits color. I really would appreciate if someone help me with this issue. Thank you all for your time and effort.