Windows XP dies on my main computer

A complete switch to Linux may be coming on my main machine: the Windows XP partition won't load, even in Safe Mode. Spent a bit of time trying to get Windows going again, without success. I don't know enough to really be able to solve this problem, and to be honest I'm not createdly motivated to find out. Ubuntu works fine, and I do have a WinXP partition on the Eee PC for the rare occasions when I actually need to use it.