Please help--computer won't post

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kizzay

Junior Member
Jan 14, 2010
10
0
0
Hi guys,

I'm having a problem with my computer where the motherboard (I think) won't register the monitor. To give a little background, I took apart my computer to re-apply the thermal cooling. When I put it back together, the fans and harddrives all turn on, but the PC won't post and the monitor won't register anything.

Things I've tried:
I got a replacement motherboard and re-wired it.
I removed the video card and used the motherboard's video out.
I took out and re-seated the RAM.
I used two different monitors (VGA and DVI).

Can anyone help me troubleshoot this? I've looked around the internet for a couple of days and I'm stuck.

Thanks in advance! See below for my computer parts.

Best,
Kevin

Intel Core i5-2500K 3.3GHz Quad-Core Processor
Asus P8H67-M PRO/CSM (REV 3.0) Micro ATX LGA1155 Motherboard
G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1333 Memory
Samsung Spinpoint F3 1TB 3.5" 7200RPM Internal Hard Drive
EVGA GeForce GTX 560 Ti 1GB Video Card
Antec Three Hundred ATX Mid Tower Case
Corsair Builder 600W ATX12V Power Supply
 
pandemonium

pandemonium

Golden Member
Mar 17, 2011
1,777
76
91
This is typical behavior of something not seated completely. Check over everything again.
 
K

kizzay

Junior Member
Jan 14, 2010
10
0
0
denis280 said:
Yes! clean all with dry cloth.the just the size of a pea will be fine.
Click to expand...

Hi Denis--

Thanks for the response. I wiped off the excess thermal paste, but I'm still having the same problem. It's either my power supply or my CPU that's the problem--safe to assume it's my CPU?

Kevin
 
E

emperus

Diamond Member
Apr 6, 2012
7,824
1,583
136
kizzay said:
Hi guys,

I'm having a problem with my computer where the motherboard (I think) won't register the monitor. To give a little background, I took apart my computer to re-apply the thermal cooling. When I put it back together, the fans and harddrives all turn on, but the PC won't post and the monitor won't register anything.

Things I've tried:
I got a replacement motherboard and re-wired it.
I removed the video card and used the motherboard's video out.
I took out and re-seated the RAM.
I used two different monitors (VGA and DVI).

Can anyone help me troubleshoot this? I've looked around the internet for a couple of days and I'm stuck.

Thanks in advance! See below for my computer parts.

Best,
Kevin

Intel Core i5-2500K 3.3GHz Quad-Core Processor
Asus P8H67-M PRO/CSM (REV 3.0) Micro ATX LGA1155 Motherboard
G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1333 Memory
Samsung Spinpoint F3 1TB 3.5" 7200RPM Internal Hard Drive
EVGA GeForce GTX 560 Ti 1GB Video Card
Antec Three Hundred ATX Mid Tower Case
Corsair Builder 600W ATX12V Power Supply
Click to expand...

Questions.

Was the computer working well before taking it apart?
You said you got a replacement motherboard? What do you mean? Did you out the current CPU in it? Did it work?
 
S

Sheep221

Golden Member
Oct 28, 2012
1,843
27
81
It seems when he was working with CPU he touched the bottom side where land grid array is, made them dirty, if some of them wont transfer the current, the CPU wont be attached to board and there wont POST at all. It will only turn on fans and drives and power LED but it will remain frozen. Remove CPU, look at the back and clean it with something really soft and clean if any dirt is on it and reseat it in, reset the CMOS and try to boot up again. Also look at the socket if there are not accidentally bent pins on it.
 
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