Pc not firing up

scottman · 27 Sep 2010 at 16:50

I was using my computer as normal the other night when suddenly it cut out for no reason. The mobo light is on green but when I press the on button it sounds like its shorting out. I have tried two different PSU's and its not that. Taken all HD's out, then graphics card and still the same problem.

Mobo: Asus P5K Deluxe
CPU: E6600
RAM: 4gb OCZ 6400

Do you think its the motherboard that has gone? or CPU?

Howitzer · 27 Sep 2010 at 17:11

Sounds like it might be the switch - you could try shorting it... (I'm sure someone can post how lol). Some MBs have a power switch directly on them (mine does) so maybe try that if you have one?

greywolf · 27 Sep 2010 at 17:17

Howitzer said:
Sounds like it might be the switch - you could try shorting it... (I'm sure someone can post how lol). Some MBs have a power switch directly on them (mine does) so maybe try that if you have one?

Use a header connector or even a screw driver to short over the two power ON pins. Trace back the wire from the ON switch if you do not know where the system panel out is. Below the pins should be marked on the mobo to indicate which are which, it will also say in the mobo manual.

If its not the switch header loose its most likely the mobo or RAM since you have not changed those. Try to boot with each memory stick individually.

anything I don't mind · 27 Sep 2010 at 17:22

have tried different power cable and different plugs ?

scottman · 27 Sep 2010 at 17:54

thanks for the replies; I will try them suggestions after some grub and will let you know. Thanks

ishoeyi · 27 Sep 2010 at 19:28

sounds like psu

or a fried overclocked cpu

or motherboard

edit: i must learn to read you already tried psu

scottman · 27 Sep 2010 at 20:30

Right, Ive tried:

A screwdriver on the two power on pins (It has done the same, tries to power up but then shorts)
Different kettle cables & different wall sockets (It has done the same, tries to power up but then shorts)
Taken all RAM out and put each one in individually (It has done the same, tries to power up but then shorts)

So looks like it could be the motherboard? But its odd that the green light on the motherboard comes on?

Edit: I checked the CPU and it didnt looked fried....no burn marks....

hartty · 27 Sep 2010 at 20:45

Sounds like the psu, Ive had this prolem before and it was that

ishoeyi · 27 Sep 2010 at 20:51

try disconnect all unneeded component

like fan, hdd, optical drive

could be 1 of the component developed a fault and creating a short circuit

scottman · 27 Sep 2010 at 20:52

hartty said:
Sounds like the psu, Ive had this prolem before and it was that

But the psu works on in my other system.

scottman · 27 Sep 2010 at 20:53

ishoeyi said:
try disconnect all unneeded component

like fan, hdd, optical drive

could be 1 of the component developed a fault and creating a short circuit

Took all fans out, HDD & optical drives, still nothing

ishoeyi · 27 Sep 2010 at 21:13

well the chance of a cpu failing is slim

psu is fine then a WILD GUESS would be the mobo...

a good excuse to upgrade?

try disconnect cpu fan too?

scottman · 27 Sep 2010 at 21:15

ishoeyi said:
well the chance of a cpu failing is slim

psu is fine then a WILD GUESS would be the mobo...

a good excuse to upgrade?

try disconnect cpu fan too?

lol that was the excuse for the upgrade

...but then got thinking about using my old pc for NAS for a A.C.Ryan Mini for the TV