Overclock.net › Forums › Components › Memory › 4x4GB DDR3 Installed in Asus P7P55D Pro and system won't POST!
New Posts  All Forums:Forum Nav:

4x4GB DDR3 Installed in Asus P7P55D Pro and system won't POST!

post #1 of 7
Thread Starter 
Just received 16GB of Corsair Vengeance for my Adobe CS6 workstation, I installed the DIMMS into my ASUS P7P55D Pro and the system won't POST! I dropped down to 2 DIMMs and managed to get into win7. The system then showed 8GB installed with 3.97 usable. I think this may be due memory mapping options in the BIOS so I will have a try at re-enabling that next time I reboot. I have heard of this memory not being recognised issue before with ASUS P55 boards before. So this just leaves the issue of the RAM not allowing POST. I have tried to flash the BIOS to the latest version on ASUS.com but the EZ Flash app always hangs on Loading!
I'm currently initializing a 9TB RAID array so the system will be busy for a while so I just wanted to post here and see if anyone else had a similar issue!? The ASUS website says my board should support 16GB of RAM just fine so I could possibly have a bad stick,
post #2 of 7
Did you try to clear CMOS?
post #3 of 7
Update bios.

Only thing I can think of is it will not work with the chip count on the ram.
post #4 of 7
If your talking about 4 x 4Gb's, and that won't boot, but when you only use 2 x 4Gb's of ram, then it boots, try pulling the 2 memory modules that you know work, and replace them with the other 2 modules.

Now if it boots up, then you know your memory is fine.
Now pull all sticks of memory, and try 1 slot at a time, and see if it boots.
If that slot works, then do the same thing for all other slots.
If all 4 slots work, then it's just gonna be a memory setting in the bios.

You may need to bump up the QPI voltage (small bump, not jack it up!)
Game Killer
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 990 extreme @ 4.2GHz ASRock X58 Extreme MSI GTX-580 lightning G.Skill Ripjaws X DDR3-2000 9-9-9-24 
Hard DriveHard DriveOptical DriveCooling
Intel 510 250Gb SSD WD RE4 250Gb x 4 Raid-0 Plextor DVR 880SA VenomousX 
OSKeyboardPowerCase
W7 Razor Lycosa PC power & cooling 950 CM ATCS-840 
AudioOther
SB Xf-i Xtreme Professional, Z2300 speakers WD 1Tb external SATA II 64Mb cache HD 
  hide details  
Reply
Game Killer
(17 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 990 extreme @ 4.2GHz ASRock X58 Extreme MSI GTX-580 lightning G.Skill Ripjaws X DDR3-2000 9-9-9-24 
Hard DriveHard DriveOptical DriveCooling
Intel 510 250Gb SSD WD RE4 250Gb x 4 Raid-0 Plextor DVR 880SA VenomousX 
OSKeyboardPowerCase
W7 Razor Lycosa PC power & cooling 950 CM ATCS-840 
AudioOther
SB Xf-i Xtreme Professional, Z2300 speakers WD 1Tb external SATA II 64Mb cache HD 
  hide details  
Reply
post #5 of 7
Thread Starter 
Thanks for the replies. Will try swapping out some sticks and slots once this array is built. Still got 19 hours to go. The annoying thing was the BIOS update. It just sat on loading when I trid to launch it. I might have to completely disconnect everything from the machine apart front he keyboard and mouse and see if that works,
post #6 of 7
Thread Starter 
270OK, I RMA'd the RAM as one stick was faulty. I now have the replacements and have them in my rig. System boots fine although now windows shows only 8GB of RAM usable and 8GB hardware reserved. Anyone have any idea how I can reclaim my RAM!!!???
post #7 of 7
Thread Starter 
SOLVED!

I checked all the usual first ports of call.

Memory Mapping was enabled in BIOS

Running 64bit OS

Entered Config in Win7 and checked there was no max memory set in Boot options

Then I stumbled across a post talking about quad channel kits in dual channel machines So it seems that if you are on a platform with dual channel memory you need to ensure you insert your quad channel kit in numbered order! On my Mobo the light blue slots are 1 & 2 and the black ones are 3 & 4. So it was a case of just getting them swapped about and voila! No running my full 16GB of memory The giveaway was in BIOS. I checked system info and my BIOS was only recognising 8GB where as windows was seeing all 16GB but reading on 8GB usable.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Memory
Overclock.net › Forums › Components › Memory › 4x4GB DDR3 Installed in Asus P7P55D Pro and system won't POST!