My PC became unstable so i desided it was time to format my hard drive and reinstall XP. All went well with the installation, no errors. Then i installed Zone alarm and no errors there. When i rebooted and tryied to start Zone alarm it gives me an error message. Will try my best to translate since i dont have XP set up on english. "Windows cannot use this device or program. You may not have access rights to use this program." I fromated and reinstalled a few more times and got Zone alarm working... for awhile till the same error message again. Windows is unstable and at times slows down...Theres some other minor errors going on all the time. I've done a hard drive scan with western digital data lifeguard diagnostics and it didnt find any errors. Originally the pc had 9600XT Graphics card but i changed it a few months back to radeon X850XT and it worked fine. Latest drivers and windows updates installed including SP2 Sorry about the spelling. AMD Athlon 64 3000+ 2x513 Radeon X850XT