P5Q very limited vNB

[Guest]

I'm trying to push my bandwidth to the maximum on P5Q Pro at 400 FSB 1:1. Minimum common performance level (tRD) I can set is 8, or it wont boot. The other problem is that lower tRD require more NB voltage to be stable or boot at all, but starting with 1.24v it doesnt boot. Actually it does first time, but after restart it shuts down, automaticly, on again and no POST, while power led flashing. How come does it happen? Is it normal?

 

[auscanzukus]

When the pc won't post but there's light/fan activity, it may be that the overclock is unstable so the pc refuses to post.

Post your specs & cpu & ram bios settings.