No Post on Power up

[CMar]

I built a new system in September, and about a month ago I started getting this intermittent problem, but now it is constant.

If I hit the Power button after a shutdown or hibernate my fans and drives spin, but I get no post. I can sometimes hold down the PWR button to force it to shut down, then start again and sometimes it will post, other times it gets hung up on the initial post screen. I can also hold down the reset button to force a restart and also sometimes get a post.

If I press the PWR to wake from sleep, it works fine, and restart from windows works fine.


Any ideas where to look for the solution??

Thanks

 

[imported_wired247]

Check RAM / CPU /NB voltages, possibly give them a bump one at a time if safe to see if that's the problem...

memtest couldn't hurt

and your PSU, what is the mfg and specs?

 

[techmanc]

Sound like a PSU problem or maybe a power supply has a poor connection. Check IDE SATA cables as well.

 

[skojec]

I am having the same problem. I've already had to RMA the MoBo (bent CPU pins) and when I got the new one back I found I had to RMA the GPU (OS would only recognize it intermittently on two different systems) and now this. When it was working, the voltages all looked good, and when it first manifested this problem I just cleared the CRLT jumper on the Mobo and it worked again just fine.

Then it did it again a couple days ago and I can't get it back. I've cleared the jumper a bunch of times, swapped the RAM around, re-seated the CPU, pulled the battery off the board and reinstalled...I can't figure out what to attack next.

 

[skojec]

I should say that the system I'm building is for my brother, and doesn't match the one in my sig. The system with the prob is configed as follows:

NZXT Guardian 921 Mid-Tower Case
BFG ES-800 800W PSU
ASUS P5Q PRO
Intel C2D E8400
EVGA GeForce GTX 260 Core 216
CORSAIR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800
Seagate Barracuda 7200.10 ST3750640AS 750GB SATA-300
LITE-ON 20X DVDRW
Logitech G5
Windows Vista 64 Home Premium

 

[CMar]

PSU is a SeaSonic S12 SS-430HB

I guess i need to open her up and wiggle some wires and see if that fixes it.