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Stable overclocked PC will not overclock anymore?

R

Robor

Elite Member
I came home to find my Abit BE6-2, P3-700 (cB0), 256MB PC133 CAS 222 (Micron) combo locked solid. Monitor was in power saving mode but mouse/keyboard activity didn't wake it. I rebooted and before any video was displayed I got a motherboard alarm as if the CPU was running to hot. I pulled the case and checked the heatsink (Golden Orb). It was cool to the touch and the fan was spinning normal speed. Cleared the BIOS, rebooted, and checked the CPU temp in the BIOS. It was only 32C.

After several BIOS clears and attempts I found that I can't overclock this PC anymore. I was running rock stable at 7*133=933 @ CAS222 using 1.8v. I've tried turning it all the way down to 124*7=868 and it failed. I don't think heat damaged it because Motherboard Monitor always reported a max temp of 40C. Now all attempts to overclock result in either a blank screen or motherboard alarm. I've got the BIOS set to boot on all errors and my temp alarms are maxed.

Any ideas on what would cause a motherboard alarm on a BE6-2? All I found in the BIOS was temp alarms and I know the CPU & motherboard are running well below the alarm levels.

Help!

Rob
 
Electromigration perhaps? I'm not sure about the alarm, but one of the things people need to realize when they OC is that it does effectively shorten the life of a device....

BTW - how many WU's are you going to lose from this? 🙁
 
BK: I can't see why electromigration would be an issue (yet). This CPU is between 6-9 months old and I'm not pushing that much extra voltage through it. Heat has never been a problem as the Golden Orb does a great job of cooling. I'm willing to accept that it will shorten the CPU life but I think this is a failure somewhere else or for another reason. One thing I didn't mention in my original post is I recently had a Cyberpower UPS go bad. This PC is now plugged directly into the wall until I can replace the failed UPS. Think maybe it got a jolt? I guess I can always try swapping some CPU's around and determine the problem by process of elimination.

WU loss appears to be about a difference of 3-4 hours per WU before and 5-6 hours after. One really weird thing... I checked my SetiQueue results.log file. I had a WU that said it took 304hr26min12sec! :Q This is an error because I did WU's before and after this WU today. Seems the SETI client is acting up. Sure isn't going to help my average CPU time!

beat mania: Do you think that dust would be causing this? I don't have any canned air at home now but I can pick some up. I did reseat my CPU and RAM sticks. Didn't help though.

Rob
 
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