BleepingComputer.com: Comp wont POST with more than 2 DIMMs installed

I just recently bought 4x2GBs of RAM and a 1TB HDD to install to my comp. My mobo has 4 DDR3 DIMM slots. When I installed all 4 DIMMs, the computer would not POST. I then unplugged the new HDD and left one of the new DIMMs in the primary slot, and it booted just fine. I added a second DIMM and it still booted. When I added the third and then the fourth, however, it would not POST. I went back to 2 sticks and plugged in the new HDD and it still worked fine. When the comp doesn't POST, all of the fans turn on and i can hear the HDDs shuffle, but the piezoelectric speaker doesnt beep and there is no display. I would be really sad if my secondary DIMM slots were bad =/

Specs:
Mobo: ASUS M4A89GTD PRO
Video Card: Radeon EAH6870
Processor: AMD Phenom 1090T 6x 3.2GHz Black Edition
PSU: ULTRA 750W ATX Power Supply
RAM:CORSAIR CMX8GX3M4A1333C9

PS my old RAM configuration was 2x2GBs and so I have not tried to use the secondary slots on my mobo until now

did you try the old ram in the secondary slots..

This post has been edited by caperjac: 05 September 2011 - 05:54 AM

this is really weird... on a whim i decided to try installing all four DIMMs again... and it booted just fine. I have no idea what happened but its working just fine now

could have just where the slots were never used and had some buildup on the contacts .

This post has been edited by hamluis: 05 September 2011 - 12:14 PM
Reason for edit: Typo.

yeah thats probably what happened, thanks for the help

your welcome ,good luck