PC Not Booting

conway990

conway990

conway990

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Joined
24 May 2011
Posts
5
Last night I was sitting playing Battlefield 3 then my PC just cut out. My initial reaction was to attempt to turn on my machine and even though it powers on I get no display or POST beeps. I have tried a known working graphics card in the machine and I am going to test my current card in a known working machine. So the question is. Is it likely that if the CPU has gone the board will have gone also or would it just be the one? I have no way to test the CPU as everyone I know has a Socket 775 or a Socket 1155.

Current spec -
I7 950 - Zalman Fan
12GB Corsair Dominator
MSI GTX 460 Hawk Talon Attack
Asus Rampage II Extreme.

The machine is less than a year old. Any help welcome and if you require anymore info just ask.
 
Have you tried a clearcmos first?
If not do that
If still no luck, remove ALL components and try and boot just mobo/psu, if these are both ok you will then get a beep code to say no cpu, if you dont its one of these which has failed, if you do, add your cpu then try, you should then get a beep code for no RAM, again if you dont its cpu, if you do add RAM and try again, next you should get no gpu, and following that hdd
 
95thrifles said:
Have you tried a clearcmos first?
If not do that
If still no luck, remove ALL components and try and boot just mobo/psu, if these are both ok you will then get a beep code to say no cpu, if you dont its one of these which has failed, if you do, add your cpu then try, you should then get a beep code for no RAM, again if you dont its cpu, if you do add RAM and try again, next you should get no gpu, and following that hdd
Click to expand...

cheers ill give this a try nobody said this to me THANKS :D
 
Aye I've tried to clear cmos. Didn't help anything. Just tested my card in my mates comp and its working fine. Have had everything out but cannot do anything without a graphics card installed as the Rampage II extreme doesn't have onboard vga/dvi!

The machine powers on Fans kick in, disc tray ejects, graphics card fans kick in also. Which makes me think the board is fine.
 
No the PSU is powering the fans and DVD drive not the mobo fella.

It's possible the PSU is knackered and can't provide enough juice to boot the system or the mobo is toast. That's where i would start, test the PSU. Either swap it out for a known good one or google to find which pins to short on the 24 pin block so it will power on from the wall sockets switch and use a multimeter to test the voltages. If the PSU is fine, then we need to look elsewhere.

Does your case have a speaker in it to sound off the POST error codes?
 
Are both cables 24 pin and 4/6/8 pin (near processor) pluged in to motherboard? :D

I had problem with it and spend lot of my time checking all competes. After all checked, my friend just pushed the 4 pin (it was loose) again, and all was fine.
 
Its a 700w OCZ Modxtreme power supply. Have had everything out and reseated RAM, Cables. I have also booted up with the bare minimum then adding everything in but without a display its not much help! Will see if i have a spare psu about. and yes I have a speaker. But no POST Beeps.
 
You don't need a display
As above, you should get error beep codes from the mobo
Try the diagnosing as above, it will let you know which component is at fault
 
ok the beeps are not sounding for me so think the beepers broke as i tried same thing in old pc motherboard only and still nothing and that board is working :/ what now ???
 
Hmm, I'm having the exact same issue, and i have the exact same psu.

Also went mid bf3. I've tried everything bar removing the RAM and CPU, but not sure if my mobo speaker works or not so hard to tell if I should be getting beeps or not. I suspect mobo or psu but haven't got a multi meter to test.
 
Emjeadea said:
ok the beeps are not sounding for me so think the beepers broke as i tried same thing in old pc motherboard only and still nothing and that board is working :/ what now ???
Click to expand...

Apologies for an obvious question, but did you connect your case speaker to the motherboard? Some mobos output beeps through the rear speaker socket, so have a speaker connected to that as well.

Without a connected speaker, you won't hear the beeps I'm afraid.
 
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