Hi, I hope you can help me here.Recently my windows xp has, on occasion gone into reboot while I'm on the internet. There's no warning ,it just goes to the black screen and then starts to reboot. It runs fine otherwise. I've tried running my AVG anti-virus and it comes up clean. Also I run the Ad-aware, Spybot, and Microsoft Anti-spyware programs I have installed everyday and end up cleaning 6 or 7 items. I was told at work that it could be someone trying to get into my pc and it's windows protecting the pc. Could this be true? I don't know what else to try as far as looking for a virus which could be causing it. I don't have heat issues. My cpu runs about 35 to 38 cel. It doesn't do it under a heavy load like when I'm burning a DVD either. I have a 2.8 gig. cpu, D865GLC mobo, 1 gig. of PC2700 ram, Delta 66 soundcard w/ Omni Studio breakout box, 480 watt p/s, sony 52/32/52 cd-rw, lite-on 1633 dvd-rw w/dl, 120 gig. hd. I'm not sure what other info you might need to be able to help, but let me know and I'll get back to you. Thank you so much for any info. P.S. During my burning of a DVD my temps will get up to about 49 cel. Also I'm running a 6800 GT 256 mb. ddr3 video card and temps during Doom 3 are about 50 cel. Again thanks