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P55-UD3L Won't Turn On With Any Overclock

T

Tencntraze

Senior member
Using a 750W PCP&P PS that was working with my old build along with 4GB (2 sticks) on this MB with an i7 860. Whenever I increase the BCLK *at all*, when I restart the computer will briefly turn on, then power off. It will continue to do this by itself until I flip the switch off on the PS. Has anyone heard of this issue occurring? The computer is perfectly stable at stock (LinX tested), so I'm completely at a loss as to what the problem could be. The BIOS is the next-to-latest version, with the only update being listed as something to do with powering USB devices, which doesn't concern me.
 
I doubt it's your PSU (but you never know), but you can try disconnecting all non-motherboard device power. Like hard drives, etc. This reduces the power-on power draw as you turn on the PC. I doubt it's this though, but maybe you get lucky (or unlucky as the case may be).

Otherwise, first thing I'd try is a complete BIOS reset, including taking out the MB battery (and checking it's voltage). Try changing some other BIOS settings, like minor bumps in voltage somewhere without changing the bclk. If the PC goes into reboot mode and you changed a setting that has nothing to do with clock speeds, it tends to mean a "confused/bad" BIOS. I've encountered some cases of confused BIOS's where the setting you think you are changing to in the BIOS, is actually changing to some completely different value from what the screen says. Generally a full reset would fix this confused BIOS state though; at least for a while. Some BIOS's also have "smart" settings that reboot and test the PC settings, but can get "stupid" about it. Might want to see if yours does and if it can be turned off.

Try jiggling/reseating your RAM sticks. Can't hurt anything and ensures good connection.


Just some ideas..
 
Thanks for the reply. I'll give your suggestion about voltage changes a shot, just in case. I had tried full resets, including removing the battery, but who knows, it's certainly possible that I missed something. I don't know that it would be the RAM, since the computer is working perfectly fine otherwise.
 
Do you have any external memory? Hard drives, flash drives? If so disable legacy usb support and see if it is interfering with the memory test at startup. Saying this because I had to on my board or overclock would fail and reset to defaults in bios.
 
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