Ok try another reinstall, please follow my instructions:
How to successfully start a fresh install of windows:
1. Enter bios, by pressing F1, F2, F10, delete upon booting up, depending on pc you have,
Go to boot devices
other deices (optional) varies on different pc`s.
2. Get a harddrive utility for the HD.
Try seatools - works for other harddrives also.
If there isnt one for your harddrive then get one of these to use:
dban - http://www.dban.org/download
killdisc - http://www.killdisk.com/downloadfree.htm
3. Run a harddrive test.
4. Run a full erase.
5. Remove cd disc utility
6. turn off pc
7. turn on pc and let it boot you should get a disc error or missing OS. (this is good)
8. Put your cd disc of windows in and reboot pc and press enter to boot from your windows disc.
9. Install drivers
10. Install protection
11. Update windows
The reason for erasing harddrive with a HD utility program first is that it will erase
everything on HD, as formatting only prepares drive for installation of windows, doesnt
necessarily wipe out harddrive from information.
Note: Its always good to perform the harddrive test, saves alot of time in future and
takes the guess work out of the problems you may incur in installing windows.
Usually I would send you to the virus forum, but because you just did a fresh install of xp, you can simply do it again, but a more thorough way.
Please mark post solved under thread tools if this fixes your problem, ty.