F3-12800cl9d-4gbnq + asus m4a77td

[luganator]

I have a weird one.

MOBO-Asus M4a77td
CPU-AMD Phenom II X4 945
Ram - F3-12800CL9D-4GBNQ
Graphice - PNY Geforce GTS-250
Power-BFG 550Watt

Running Windows 7 64bit. I started running the default BIOS settings with the DDR3 running at 1333 and everything set to auto. OS installed and everything was running great..until I booted the box up the next AM..BSOD. After checking the BIOS settings and upgrading to the latest BIOS I booted again..everything ran fine for 6 hours or so. The next AM..yep..BSOD. It seems that it takes the system about 10 minutes to 'warm up' before it works.

I ran memtest on a cold box the next day..errors at 1535MB...waiting about 10 minutes in the bios setup..didn't change nothing...memtest then ran for 5 hours without error.

The next day..same thing. THen came the forum searchs and stuff..I followed the recommended BIOS settings a ASUS model that was 'close' to mine. Still no change. Now..keep in mind that with the recommended settings I was able to run the ram at 1600 without issue...ONCE it warmed up for 10 minutes. I played games on it for 2-3 hours without issue. If the box is shut off for mabye 2 hours or less..then it boots fine and runs great. I found the cut off to be about 3-4 hours..after that it needs to warm up. Does this sound familiar to anyone?

[luganator]

Now..the box will not cold boot with any settings outside of the default bios. If I set the memory to 1600 it will give me a 'Overclock Failure' and tell me to hit F1. Now..if the box has been running for awhile I can change the memory and voltage settings and reboot all I want without issue. Does this sound like a issue with CPU, memory or the motherboard?

[luganator]

More more update. I swapped out the PSU for a 650 watt one and no change.

[luganator]

And one last bit of information. I tried pulling out one stick of the memory...bios still set totally at factory default...and memtest85+ v4.0 reported the correct amount and timing of the memory..but said it was running at DDR400. I know I saw in the post message the memory was running DDR3-1333???? I turned off the machine..swaped the memory sticks around and the same result. Now..if I put BOTH memory sticks back in the machine....memtest86 is back to reporting DDR3-1333. Anyone have any ideas why THAT would happen?

[GSKILL TECH]

Try raising HT Voltage to 1.40V. Your CPU may have issues operating DDR3-1600.

I would suggest running each stick individually with the proper settings, then run memtest on each to make sure they are working fine.

Thank you
GSKILL SUPPORT

[luganator]

Thanks for the info

Ok..I punted the motherboard. So far..it seems it was indeed the motherboard. I do fhave one follow up question..the new motherboard is a MSI NF750-G55. I have no idea what the BIOS settings should be set to. Right now it's running DDR3-1333.