Re: Safe mode does not work
What BSOD error are you getting? And there are drivers or files mentioned? If you restart immediately at the F8 menu, select Disable automatic restart on system failure. Also, have you updated you windows xp?
Re: Safe mode does not work
That sort of early blue screen most likely means bad power supply , ram or registry problem. If you do not know how or the means to solve this problem of having the computer to a repair center and hope is only the power supply. If you have the ability to do so, remove the hard drive, install it on a USB enclosure and see if you can read and copy your content from another team as soon as able.
Re: Safe mode does not work
You can repair a corrupted registry in Windows XP. Corrupted registry files produce various different error messages. See the Microsoft Knowledge Base articles about error messages that are related to registration issues.