I have a brand new PC with an Asus P5GDC-V Deluxe motherboard with a Pentium 4 (775) 3.4 GHz processor.
The problem started when the PC was brand new, it booted up fine into Windows and was happy until I changed the screen resolution from 1024*768 to 1280*1024 at which point the PC would reboot, it would then got stuck in a cycle of restarting windows to the point before the welcome screen and promptly rebooting again.
The PC went back to the manufacturer and had the CPU, Motherboard and Memory changed, the problem still persists!
I want to try and avoid sending it back again (new toy and all that!) so I deleted the hard disk partition and re installed Windows XP professional. I have installed drivers step by step, creating a restore point at each stage. Everything works fine with the graphics - it will display the 1280*1024 quite happily until I install the Intel 915G chipset graphics drivers. They install OK (the latest version is build 3943) and prompt for a reboot. When I reboot the problem reoccurs - just before it boots into the Welcome screen, the PC reboots.
Interestingly as well, if I have the resolution at 1024x768 and run DXDIAG it reboots at the third test (full screen mode).
I have tried everything I can think of!
Anyone any ideas?