Problems rebooting system when OC is large...help?

[The Faceless Rebel]

This seems strange to me..but maybe some of you OC veterans have seen this before and know why.

I am presently trying to run a Celeron 566@994 mhz. At this speed, everything is nice and stable, but when I try to reboot the system (i.e. Start Menu, Shut Down command, Restart, OK) it refuses to POST on a soft reboot. I can only POST and boot the system from a cold start by turning the power off and on again. I don't get it. Has anyone seem anything like this before? It only happens at speeds of 994/117 and 952/112...once I drop the speed to 876/103 the problem with soft reboots magically vanishes. WTF?

Aopen AX6BC (old-school BX board, which only has FSBs at 100/103/112/117/124/133)
Celeron 566 cB0 stepping
one 128 MB PC100 SDRAM
two 64 MB PC133 SDRAM
Hercules 3D Prophet II GTS 32 MB
other stuff...sblive!, NIC, UltraATA-66 PCI adapter, modem

Help?

 

[Jon]

It's a voltage problem. Give it a little more juice and see if it won't help.