ASUS P5K Deluxe MB Problem - Wont Boot

[barleydog]

My new ASUS P5K Deluxe motherboard has a problem. It powers up for about a half-second and shuts down. All the fans stop but the MB green light is always on. No beeps are heard but I don't think it has time to beep before shutting down. And there is nothing on the monitor either. Could this be a defective motherboard? CPU?

All hardware is new:
Intel Core 2 Duo E6550 (2.33Ghz, 1333FSB, 4MB L2 cache) CPU
ASUS P5K Deluxe WiFi AP MB
DDR2 1GB x 2 (2 GB total) memory
Antec Nine Hundred case
Antec EarthWatt 500W ATX12V v2.0 PSU
WD7500AAKS 750GB SATA/300 drive
PNY 8500GT PCIE 512MB DDR2 graphics card

I have tried to narrow the problem down. I used just one memory chip trying both of them and this has the same result. I unplugged everything and reconnected them one by one and powering up but nothing is different.

One thing that is different is that if I pull out the CPU and turn it on then the MB stays powered (fans spin, etc). But I don't know how valid of a test this is w/out the CPU. There are no beeps and nothing on the monitor. Without a CPU I guess that seems right. What else can I try?

thanks.

 

[LightningRider]

Is anything metal touching the motherboard that could be shorting it out?

Are you sure you seated the CPU correctly? (Didn't force it in? If you did chances are it's broken or your motherboard is.)

Could be a bad board. Maybe both your RAM sticks are bad though? Happened to me with OCZ memory.

 

[piasabird]

Read the manual for the motherboard and follow the instructions for clearing and resetting the BIOS. I have seen this happen and clear right up when you reset the BIOS. Especiallly with Asus Brand Motherboards. My A7N8X did the same thing.

 

[webadala98]

Check your CPU Heatsink installation. Make sure it has good contact, sporadic reboots are usually an indication of CPU overheating. Also, does it always happen at the same place? if not then this could be it. Those Intel stock heatsink are very unintuitive , after pressing them in, you tend to think to turn the nob to lock it but in fact you are releasing it.... ASUS's manual are much better at describing the install. Hope this is your issue, otherwise it will take trial and error, start with PSU (if you can find a spare PSU) and then MB.....

 

[SerpentRoyal]

Model of RAM? Did you connected the two PSU power plugs? Take the MB outside of the case and put it on the shipping box. Reset CMOS, RAM, CPU and retest.