Hi,
I just built a system for a friend (1st build for me) and I seem to have run into a problem. I put together the following system for him:

P4 2.4A 533 Mhz FSB
ASUS P4S800 board
512 PC2700 memory
3 fans
Thermaltake 420 Pure power PSU
Seagate Ultra ATA 200 Gb HDD (7200 rpm, 8mb cache)
GIGABYTE ATI RADEON 9250 Video Card, 128MB DDR, 128-Bit, DVI/TV-Out, 8X AGP, Model "GV-R925128D"

Problem: After the build, everything runs just fine EXCEPT when i try to change the display properties to a higher resolution, say: 1280 x 1024 @ 32bit, the PC reboots immediately. I was also not able to playback any DVDs even after the proper software and codecs had been installed. I would appreciate it if someone could point me the right way as to what the problem might be & maybe provide a solution. TIA