Causes of cold boot issues, anyone? ( P6T )

[Think]

The ongoing thread is not very responsive on what seems to be a systematic problem with the Asus P6T line of motherboards. Surely, I'm not the only one at xtreme that has not encountered a similar situation.

I can run 20, 21 x 200 8,8,8,24 without a problem : games, prime all work fine. The problem is when trying to start the computer after a long shut-off period of time, there is no boot sequence - no post. Tried another powersupply, the card is new, memory passes without a problem.

Bios 0301
Bios 0904

On occasion, the bios will completely reset to factory settings during a cold boot sequence as well.

Any clues on the cause?

Thank you

[kemo]

I had Exactly the same problem when doing 19X200 8-8-8-24 but it was solved when i upgraded the Video Card so it is apparently a mix of many factors and working at stock there was no cold boot , Bios 0707 Dated 8/18/2008
Specs was
I7 920
Asus P6T (non deluxe)
6GB OCZ Gold 1600MHZ CL8 >> testing a Corsair 1600MHZ CL7 on different occasion didn't help
Sapphire HD4890 >>> Upgrading to XFX HD5870 Solved the problem
Corsair TX850W

[Salamndar]

Tell me what PSUs did you try?

[Think]

Tell me what PSUs did you try?

Enermax Evolution 850W

I had a PCPOWER 750 and changed it to this. It was perfectly fine with my 4870x2 and rampage extrem (775)...so I'm using it on this combination.

[wilkinsb01]

i have the same problem with my P6T DELUXE V2 sometimes boot and sometimes not i think is a bios problem because (PSU , VGA ,MEMORY ,ETC ) was working good in 2-3 system
when i overclock my system only read 4GB with out overclock read the right 6GB

[ViViD]

I Have Too This Problem On My P6T

Many Time I Work With 210 BCLK And Every Test (3D) Pass Succesfully But When Shoting Down And Turn On No Post

Use 780W PSU

[Think]

I'm glad I'm not the only one. I tried another powersupply and still no go so it's definitely the bios/board.

Bios version 0904 so far.

[Stelios]

No issues with bios 0801 . I7 at 200x21 (ht on) and ram @ 7-9-7-20/2000Mhz

I have cold boot issues when i disable HT. Also , newer bios sucks as the max bclock is limited to 185 mhz when selecting the 2:10 ram divider . So i stay with this "old" bios .

[Think]

No issues with bios 0801 . I7 at 200x21 (ht on) and ram @ 7-9-7-20/2000Mhz

I have cold boot issues when i disable HT. Also , newer bios sucks as the max bclock is limited to 185 mhz when selecting the 2:10 ram divider . So i stay with this "old" bios .

I'll try and roll back the bios. thanks