Hi,
Try running this first and see how it goes.
Verify Window’s Files
1. Go “START”, “RUN” type “CMD” Press “OK” or Boot PC into “safe mode with command prompt”
2. Type sfc /scannow /f (note:- space after sfc)
3. Windows file protection will check your files. Follow any prompts; you may be required to use your XP CD.
4. Re-boot your PC
If that can not fix your problem try these,
On-line Virus Scan
Go to one or all of these sites and do an online virus scan.
housecall.trendmicro.com
security.symantec.com
us.mcafee.com/root/mfs/default.asp
Check Malware
Go to
http://www.besttechie.net/tools/mbam-setup.exe
and download and run Malwarebytes' Anti-Malware.
1. Double-click mbam-setup.exe and follow the prompts to install the program.
2. Make sure you put a check in the Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
3. If an update is found, let it download and instal.
4. Once the program has loaded, select Perform full scan, then click Scan.
5. When the scan is complete, click OK, then click Show Results to view the results.
6. Make sure that everything is checked, and click Remove Selected.
7. When completed, a log will open.
Check Spyware
Go to
www.safer-networking.org and download and run Spybot
To Repair Windows XP from your XP CD…..
1. Re-start PC with XP CD in drive (Have your serial number handy)
2. As your PC starts press “F12” for boot menu (Or what your PC may ask for)
3. Scroll to and select “boot from CD.”
4. At prompt “Press any key to boot from CD” Press “Any key”
5. In the Windows XP Setup window, Press “Enter” to set up windows XP, (Don’t worry, this is a repair only, not a fresh install.)
6. At next window, Press “F8” to accept license agreement
7. Wait until windows displays your current version of XP and asks “To repair the selected windows XP installation press R”
8. Press “R”
9. Enter serial number when prompted.
10. Wait for files to be copied (PC will indicate 39 mins, it will take a lot less.)
11. When asked to adjust Regional language options, click “Next” as it is still set.
12. PC will re-boot.
13. If you have AVG Free, copy serial number to a file as you will lose it on repair. After repair a window will pop up asking how you want to treat AVG, Click repair and when prompted enter serial number.
14. Check to see if problem still exists.
Unsolved 
