Originally posted by: VirtualLarry
Originally posted by: samboy
Originally posted by: VirtualLarry
This appears to be a power-supply issue, most likely. An underpowered PSU or issues with the mobo caps in the CPU's VRM circuits or AGP power can cause issues like this. Do you only have a generic 300W PSU in there? Try a name-brand 350W or better, or generic 400W. Btw, the board is an "M7NCD-Pro", the chipset is the NForce2 Ultra 400.
I've installed the non-pro version, and it seemed to be a really solid, decent, cheap, NF2-based board. The major disappointment to me was that the BIOS of the non-pro is crippled, no Vcore/Vagp adjustments at all. Totally bogus, since I know that the board supports those features.
I have an Enlight case with a 360w power supply. As far as I can tell, these are middle ground in terms of quality. Not the cheap generic kind, but not Antec quality either.
The same power supply works fine with the NF7-S board. I did notice that the Abit board did make use of one more power connector, so it could be that the Biostar board did put more strain on one of the rails? Either case for me, the NF7-S worked and the Biostar did not for the higher clock speeds. Also, note that Biostar has both a "M7NCD-Pro" and a "M7NCD-Ultra" (the one I had) board that both use the "nFORCE2 400 Ultra/MCP chipset" - confusing I know!
As another poster mentioned, the Shuttle AN35 is probably the best choice on a budget.
I stand corrected. When I built the system I mentioned, back in Dec., I don't think that the M7NCD-Ultra model existed, as the BIOS update page only mentioned the regular and "Pro" model. I see from checking their web site that it added a Via SATA raid chip.
I'm still surprised at the cold-boot problem, as the most common cause is an underpowered power-supply. Do you have a lot of additional accessories in the system? Cold-boot requires a much higher current out of the supply than a warm-boot. If the supply is already loaded well when running, it may not have the extra margin for power-on loading. This is one of the reason why "good quality" power-supplies are often underspecced by a good margin.
The only other likely cause that I could see, is faulty mobo engineering, issues with the CPU and boards power-on circuitry, power/clock-stabilization, etc. I know that there have been some minor updates by AMD to these guidelines, as newer AMD CPUs were introduced, but the M7NCD board series is new enough that these shouldn't have been an issue, I don't think. Did you have the newest BIOS flashed, and did you have a fresh CMOS battery installed?
The 360W Enlight PSU seems reasonable enough spec, offhand.