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Re-build PC. Problem: Powers on, no Post (or beeps) and No Display!

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February 21, 2011 1:05:34 AM

I am coming to you, tom's hardware community as a last resort before I take this PC in for "professional" help at a local tech shop...

here's the story. My main gaming PC recently got an update.. So I decided to "recycle" some of the older parts and build father a new system

The parts I kept from my original gamer rig was

Asus P5N-D Motherboard
EVGA 8800 GT GPU
Intel Q6600 CPU
OCZ PC2-6400 RAM

I bought NEW parts to go with this

CoolerMaster 500w PSU
Western Digital 500gb HDD
CoolerMaster case (pretty generic)

Now i rebuilt the system and figured since the majority of the main components are unchanged I'd have no problems, right? Wrong...

Now i LITERALLY took the parts from MY OLD case into the NEW one, hooked it all up with the new PSU and it's giving me issues.


Here's what I'm getting.

Everything plugged in: Plug the PSU in, flip the I/O on the back, and it automatically turns on? (This surprised me as I didn't even need to press the button at the front. PS, this happens every time I try to turn it on)


-No motherboard beeps AT ALL.
-Everything is running. Fans, CPU fan, GPU fan, Optical drive opens/closes..
-No display on monitor.
-BOTH the RESET and POWER buttons at the front DO NOT WORK (I don't understand why)


The only way I can get ANY kind of "beep" is by unplugging the GPU which does one long "beeeeeeeeep" song, very loud.


Yes, i've double,triple,quadruple checked ALL connections, yes i've tried moving the RAM around and unplugging/replugging things..

I'm COMPLETELY at a loss here.. How did the system just "break"??
February 22, 2011 3:56:03 AM

Hello bachpat;
Did the case come with brass standoffs to mount the motherboard?
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February 22, 2011 3:58:06 AM

Run through the forum's "System won't boot" checklist.
It could be something as simple as the motherboard standoff not being installed, or having one installed in the wrong place, that might short out the motherboard.
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February 23, 2011 4:13:16 AM

Yes the standoffs are all there. There were 9 and I installed them in the right place... I did check the checklist and ran through it everything is fine.

All the individual components work just fine. I'm really confused.
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!