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Computer Hanging/rebooting Automatically - Vcore?


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#1 CocheseUGA

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Posted 11 March 2007 - 09:01 PM

Sorry if this is short when you see it: I'm typing in batches so I can get through the reboots.

On Feb 22nd, computer rebooted while I was surfing the internet for no apparent reason. It never fully came back up that day. Took it to Atlanta where my dad has some spare PCs, and started fiddling with it. Finally got to the point (randomly) where I discovered I could get it to boot, but to the second HDD (see specs below). Disconnected the second HDD, and it booted fine to the primary HDD. Wierd, but ok.

Fast forward to today, and it's doing it again. There's no powerdown, no sounds, no nothing. Just *poof*, screen is black and same sounds eminate from the PC. I get normal post sounds, mobo gives a green light, HDDs seem to be working fine. So my logical guess is hardware. I used the PC-probe that ASUS supplied, and I also downloaded MBM5. The specs line up for both, and this is what they are:

ASUS A7V600 Socket A BIOS v
AMD Athlon 2500+ XP std clock/core
ATI Radeon 9500 XT
Win XP Home OEM
512MB mem

Measurements:
CPU: 1821-1824MHz, 107-122F, 1.72V (is supposed to be 1.65?)
Case: 95-96F
3.3: 3.06-3.12
5.0: 3.18-4.08
+12: 11.43-11.61
-12: -.10-.06
Fans all look normal

Nothing in the Event Log, save for System Restore errors. I've turned Automatic Rebooting off, doesn't matter.
Noticed the last two logs for MBM show my Vcore now at 1.61, and it's stable (at least for now). Only problem is, I couldn't ramp it down if I wanted to (BIOS shows it at 1.65V, and there is no lower option).

EDIT: 1.61 didn't make it more stable. After reading up on the power supply, I'm under what is stated to be the minimum voltage for the PSU. Would this give these characteristics? If so, I'll go ahead and order a replacement.

Edited by CocheseUGA, 11 March 2007 - 10:31 PM.


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#2 Mr Alpha

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Posted 12 March 2007 - 04:19 AM

Yes, your power supply is the problem, and it has just these kind of symptoms. When you get a new power supply make sure you get a good brand like CoolerMaster, Enermax, Fortron Source (FSP Group), OCZ, PC Power & Cooling, SeaSonic, Silverstone, Sparkle, Tagan, Vantec, Verax or Zalman.
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#3 CocheseUGA

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Posted 15 March 2007 - 06:45 PM

Replaced PSU, no dice. Posting on PSP, comp is dead. Green light on mobo, red light on case. CPU & case fans spool up, no post. Can't afford too much more trial & error.




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