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Tom's Hardware > Forum > Motherboards & Memory > Gigabyte > P55M-UD2 Pre-POST Reboot cycle

P55M-UD2 Pre-POST Reboot cycle

Forum Motherboards & Memory : Gigabyte P55M-UD2 Pre-POST Reboot cycle

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k5josh   12-07-2009 at 11:26:46 PM

I'm having a problem with this new build:

GA-P55M-UD2
Intel Core i5 750
Corsair XMS3 2X2GB
Raidmax RX-730SS 730W PSU
WD "Green" 1.5 TB SATA HDD
Raidmax ATX-798WB Case

I have the infamous reboot cycle that a bunch of other people apparently have, but I have RAM that nobody else seems to have had problems with as far as I can tell. It turns on for maybe a second, then turns off for 3 seconds or so, then repeats. I'm not even able to get into POST. Help is much appreciated.

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Fatbird   12-08-2009 at 02:44:41 AM

Try doing a clear CMOS. Remove the RAM and power up the system, do you hear POST beeps? If you are not, check your processor installation... and yet, remove all the paper washers for those motherboard mounting holes.

Reply to Fatbird
k5josh   12-08-2009 at 03:30:31 AM

I've cleared the CMOS, and it didn't help. I can't even get to POST, and I'm sure the processor installation is ok. I never put in the washers.

Reply to k5josh
bilbat   12-09-2009 at 01:33:08 AM

Check for bent pins in socket:
http://www.intel.com/support/proce [...] 030850.htm
Double-check HSF mounting/paste application - timing sounds about right for repetitive thermal shutdown...

Reply to bilbat
Fatbird   12-09-2009 at 02:57:32 AM

Firstly remove all your DIMMs, check if there's continuous long beeps from PC speaker.
If you hear nothing, it means the board can't self debug. It leads to improper processor installation (even Bilbat's bent socket pins) or the board has failed (unsupported processor or other failures).


Message edited by Fatbird on 12-09-2009 at 03:18:23 AM
Reply to Fatbird
vincentmoy   12-30-2009 at 09:49:57 AM

Have you fixed your problem yet? I have the same issue as you but it could be your power supply. Although my computer will start up after it looped a couple times.

http://forums.anandtech.com/showthread.php?t=2020920
http://www.youtube.com/watch?v=_yiNEZWpLZ0

I might go to bestbuy and see if they have any v2.3 PSU laying around. It sucks

Reply to vincentmoy
ra3tonite   02-11-2010 at 09:38:12 PM

make sure you have the additional power cord connected. there is the main motherboard power, and then there's an extra one right next to the CPU.

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