Hi, I recently installed a new motherboard, processor, and memory into my existing case but still have one of the same problems I did running my older components under Windows XP Professional: every now and then-- seemingly during or recently after viewing a web page in Internet Explorer with Java components-- my computer spontaneously restarts. I've upgraded my BIOS to the newest version, and installed all the latest XP drivers I could find for my add-ons. But it didn't help. And I don't see how it could be related to my motherboard, RAM, or processor since they were all replaced. I've performed an upgrade from Win98 and a clean install of XP, but both had the restarting problem. Here are my specs: Athlon 1800XP Asus A7V266 motherboard (BIOS v1007) 512M DDR (2100) RAM IBM Deskstar 60GXP hard drive (no surface errors detected) Asus V7700 Deluxe Geforce 2 GTS 64M AGP card Soundblaster MP3 Live! sound card Tekram DC-390 SCSI2 card (doesn't support BIOS flashing, only has Zip drive attached) 3Com 3c905B 10/100 network card Cinemaster DVD decoder card Sony CD-R/RW drive no-name DVD-ROM drive 300W power supply 6 or so USB peripherals Thank you very much for any help. -Colin

It could be a sign of cpu overheating. A wrong cpu frequency setting usually makes the cpu hotter that usual. Hope this helps. bye

It's not Java or IE problem, check your CPU heat in bios. If you have retail cpu fan, there shouldn't be a problem. If you have a custom HSF, then maybe your HSF did not seat correctly and your cpu is overheating. Turn off your computer and let your inside of computer cool down for 30 minutes, your restart will reduce for up to couple hours.. after running couple hours, restart problem will occurs again.

Power supplies have been known to cause this type of problem.

Your Nvidia based graphics card may be overheating...this will cause your computer to freeze and then reboot. Do you get an error message upon rebooting asking you to send or not send the data to microsoft? Does it mention a driver? I had the same problem in ME and XP - turned out to be my GeForce2 MX 400 based card. I replaced it with an Xtasy GeForce4 MX440 board - good to go now...

Thanks for your suggestions everyone, I've been able to isolate the problem even more. I disabled XP's restart on fatal errors and added a registry hack to display the dump of the memory when the STOP error occurs (see Q256010). (Apparently Windows XP does still produce BSODs, it just tries to hide them from you. Nice job, Microsoft...) Without the registry hack the BSOD dump says: PROCESS_HAS_LOCKED_PAGES STOP: 0x00000076 etc., etc. When I added the registry hack to show which file produces the STOP error the dump says: DRIVER_LEFT_LOCKED_PAGES_IN_PROCESS STOP: 0x000000CB and lists the file AFD.SYS It's always AFD.SYS, a Winsock API. Does anyone know of any problems with AFD.SYS? I replaced it with another copy from the XP CD, but it didn't fix anything. There don't seem to be any updates for it anywhere either. Anyone? Thanks again. -Colin