No Post, No Boot, No Beeps, Help!

rysN

rysN

rysN

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Joined
21 Jan 2006
Posts
6
Location
uK
Hi guys,

I was enjoying a quick game of Counter Strike (first time in approx. 1 year) before my computer decided to power down. Once powered down, my PC then tried to boot several times on-off-on-off before I switched the power off completely. After turning the power back on almost straight away, my PC continued to irratically boot on-off-on-off again. I proceeded to switch off the power once again and gave it a good couple of minutes before trying again, this time, the PC booted but no post and my monitor light went into standby.

I have tried the following:

- Removing GPU and running on onboard gfx. Resulted in no post but monitor detected an output (green light)
- Disconnecting all components apart from CPU, HDD, and 1 stick of RAM. Resulted in no post, no beep.
- As above with 2 sticks of RAM. Same result
- Reset CMOS with no result
- Checked PSU voltage on no load. 12, -12, 5 and 3V present
- Checked PSU voltage on load - Same result as above

After these tests I led myself to believe that my motherboard had failed. I have no replaced my motherboard but have the exact same issue. So my current state after switching my PC on is:

- No post
- No beep
- CPU fan spins, front case fan spins, GPU fan does NOT spin, back case fan does NOT spin
- HDDs feel like they are spinning

My current spec is as follows (sorry it's vague - I'm out of touch!):

i5
Gigabyte Z97 D3H Motherboard
8GB DDR3 Corsair Dominator (1333MHz)
OCZ 700W PSU
Samsung SSD

Any help will be greatly appreciated! All my PC experience is exhausted :(

Many thanks in advance!
 
teenwolf said:
missed that bit,
OP try the mobo out of the case.
Click to expand...

How would trying the motherboard out of the case benefit me mate? I've installed this new motherboard this evening and there doesn't seem to be any shorts or any stray contact to the case chassis for example.

I'm aware the the Z97 D3H has an LED strip integrated into the motherboard PCB at the bottom left, and this doesn't even light up. Saying that, I have light on my power LED.
 
Do you have a multimeter? you can easily check if the PSU is outputting power and then determine if the problem is the PSU or mobo. Someone you know might have one?

EDIT - just re-read OP and see that fans are spinning so PSU is outputting some form of power. sorry.
 
Hold the mobo with gpu on your hand then try and boot the pc, if it does boot then there might be a short somewhere.
But i would probably go with psu being defective
 
Last edited:
Just to close this out. I have resolved the problem. It was my PSU - despite all rails providing voltage off load, the PSU was not setting the Power_Good (grey wire) input hi which resulted in my CPU never calling the POST.

Got the Corsair RM 650 as a nice replacement for my old OCZ Modstream 700.

Cheers for the help guys.
 
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