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Mainboard: No POST Signal and doesn't boot to BIOS

Last response: in Motherboards
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April 30, 2010 9:11:20 AM

Hello,

As in the title said, my mainboard doesn't make a POST Signal or boot to the BIOS.

Sometimes the mainboard starts (I can see from the lights and CPU fan), shuts down after 2 seconds, starts again and then stays on. In some cases this happens up to 5 times before it stays on.

I assume the CPU (Intel E8500) is broken.

Here is what I've tried so far:
- All components removed, except CPU/HF, RAM & Graphics card (PNY Geforce 9600 GT)
- Changed mainboard (ASUS P5QL-E and Gigabyte EP45-UD3LR)
- Changed power supply (Corsair 400W and Xilence 500W)
- Remove all RAM (Kingston HyperX 6400), keep the graphics card and look if there is a POST Signal
- Remove the graphics card, keep 1 RAM and look if there is a POST Signal
- Placed the Mainboard on my table to check if there is a problem with the case
- Replaced the Scythe CPU-Fan with the Stock fan from Intel...

The only thing left is the CPU I guess. Any other ideas?

Thanks for any help!

More about : mainboard post signal boot bios

a b V Motherboard
a b à CPUs
April 30, 2010 11:23:32 AM

I would re-seat everything.
Anonymous
a b V Motherboard
a b à CPUs
April 30, 2010 2:08:23 PM

absolut_ said:
Hello,

As in the title said, my mainboard doesn't make a POST Signal or boot to the BIOS.

Sometimes the mainboard starts (I can see from the lights and CPU fan), shuts down after 2 seconds, starts again and then stays on. In some cases this happens up to 5 times before it stays on.

I assume the CPU (Intel E8500) is broken.

Here is what I've tried so far:
- All components removed, except CPU/HF, RAM & Graphics card (PNY Geforce 9600 GT)
- Changed mainboard (ASUS P5QL-E and Gigabyte EP45-UD3LR)
- Changed power supply (Corsair 400W and Xilence 500W)
- Remove all RAM (Kingston HyperX 6400), keep the graphics card and look if there is a POST Signal
- Remove the graphics card, keep 1 RAM and look if there is a POST Signal
- Placed the Mainboard on my table to check if there is a problem with the case
- Replaced the Scythe CPU-Fan with the Stock fan from Intel...

The only thing left is the CPU I guess. Any other ideas?

Thanks for any help!

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Anonymous
a b V Motherboard
a b à CPUs
April 30, 2010 2:10:02 PM

i have ,what looks like, exactly the same problem,sorry no fix,but sympathy
April 30, 2010 2:57:13 PM

Thanks for the replies!

My first mainboard (ASUS P5QL-E) was dead; I had bought it from eBay and noticed afterwards that there were some broken pins where CPU gets placed.

Now after changing the CPU to the new mainboard didn't help.

The symptoms were exactly the same, but after checking the position of the MB speaker I found out that it was placed wrong. That had caused all my problems :) 
!