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P55a ud3 running 3 ram slot

Last response: in Motherboards
July 13, 2011 11:59:26 AM

Hello, My ga-p55a-ud3 running with 3 ram slot.Its make restart one time at "Loading operating system" and after that its boot to windows normally.

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a c 717 V Motherboard
July 13, 2011 4:11:02 PM

Welcome to Tom's Forum! :) 

The problem might not be related to the RAM; use the first 2 DIMM slots, skip, and last slot as shown below and not DDR3_4.
CPU | RAM | RAM | blank | RAM |
CPU | DDR3_2 | DDR3_1 | DDR3_4 | DDR3_3 |

The Primary DIMM Slots are DDR3_1 & DDR3_3. However it is ideal to use 2 or 4 sticks of RAM since you have a Dual Channel MOBO. Further, ALL sticks MUST have the same Frequency, CAS Timings, and Voltage. Different sizes in the White slots is not recommended.

You can test this by pulling one stick and use the WHITE slots only.
CPU | blank | RAM | blank | RAM |

Next, it might be a good idea to Clear CMOS using jumper method; see page 30 of your manual. Further, often a BIOS Flash can correct the problem; use the Q-Flash method.

GA-P55A-UD3 (rev. 2.0) -
GA-P55A-UD3 (rev. 1.0) -

Q-Flash procedure - video:
Part 1 -
Part 2 -
Part 3 -

If running XP see ->

Good Luck! :) 
July 20, 2011 9:35:03 AM

Its work !! Thank a lot jaquith :bounce: 
July 20, 2011 9:35:15 AM

Best answer selected by boycuoi.