Okay, here is my findout in three days:
Please noted, the board is flashed with the latest BIOS C6, WinXP freshly installed. Prime95, Memtest86, Sandra all past at all FSB tested. All the other components has been tested, and work very well with other motherboard (Asus P4B266-C) at FSB150 or lower. And, I am 100% sure the system is NOT booting at the background since I put a bootable floppy into A drive, whenever it hangs, it just hangs, harddrive light goes off, no reading or light from floppy drive. The motherboard during cold boot simply hangs with its own problem.
1. Running 150FSB on IT7, cold boot problem as described before.
Symptom: Reboot, start up in short time, everything is fine. Except when I leave the computer shut off for more than an hour, If I press the power button, it will power up, but no video, reset at this point does NOT work too. If I press the power button for 4 second to shut it off, unplug the power cord, and plug it back on, everything become normal. To put is short, any power off, reset within one hour is fine, outside one hour need to unpower the PC.
swap memory from crucial to viking.................... does NOT help
swap video card from geforce to ati .................. does NOT help
unplug some case fan to save power................ does NOT help, become even worse
2. Running 144FSB on IT7, still cold boot problem, somewhat relaxed/changed a bit.
Symptom: Reboot, start up in short time, everything is fine. When I leave the computer shut off for more than an hour, If I press the power button, it will power up, video does show up. But Booting hangs right after finished the memory self-test, error messages shows on screen complaining about BIOS checksum error, also complains about no keyboard found, although I am sure everything is fine with my keyboard. Reset at this point does work, and will make the system booting into WinXP without problem. But the first power up always hangs.
3. Running 133FSB on IT7, NO cold boot problem.
Symptom: Reboot, start up in short time or long time work fine. No cold boot problem.
My guess is, this board will only perform well at FSB133 or lower. Higher FSB will resulting cold boot problem. The Abit motherboard is the weakest part in the three overclocking components, e.g. CPU, Mem, MB. Too bad this is my first Abit motherboard, and may be my last one too.
