help please,when i turn my comp on it switches off

chris-82 · 4 Aug 2012 at 12:28

as above in title when i turn my computer on it starts to power up then switches off it does it every so often and only once today when i turned it on it did it three times before it finally booted and stayed on the whole rig is only about 4-6 months old.

heres my rig spec:

spec:
antec 300 case
i5 2500k 3.3 overclocked to 4.4ghz
Xigmatek Red Scorpion CPU Cooler(fan replaced with Akasa AK-FN059 120mm Ultra Quiet Venom Viper)
gigabyte z68ap-d3 ddr3 mother board
2x4 gig of kinston hyper x grey ddr3 1600mhz ram (8gb)
500gb seagate barracuda hdd
120gb sandisk extreme ssd (boot drive)
radeon hd6850 graphica card
ocz zs 650w psu
xigmatek fan relocated to side panel two antec fans front of case,antec rear fan antec top case fan
maxtor 750 gb external hdd

any help would be much appreciated.
cheers chris

Doomedspeed · 4 Aug 2012 at 12:40

How far does it get into booting, can you get into the BIOS?

Have you checked all your internal and external connections?

Orcvader · 4 Aug 2012 at 12:40

Have you returned the CPU speed back to stock to see if it still happens?

Attu90 · 4 Aug 2012 at 12:44

Put it back to stock speed, if it still does it try each stick of ram in turn to see if it still plays up.

chris-82 · 4 Aug 2012 at 13:24

Doomedspeed said:
How far does it get into booting, can you get into the BIOS?

Have you checked all your internal and external connections?

the screen is still black on the monitor when the power switches off.

it doesnt do it all the time does it maybe twice a month

so can easily get to bios

the system is a pre built overclockers build so the overclock has been done by them these are tested surely or?

i will check all conections now

thankyou for the quick replys

Doomedspeed · 4 Aug 2012 at 13:33

Orcvader said:
Have you returned the CPU speed back to stock to see if it still happens?

Attu90 said:
Put it back to stock speed, if it still does it try each stick of ram in turn to see if it still plays up.

When you get into the BIOS do this.

CyberCrow · 4 Aug 2012 at 17:02

Sounds like your mobo is dying my old Q6600 rig died in the same way, was sad day loved that Cpu

chris-82 · 5 Aug 2012 at 11:18

CyberCrow said:
Sounds like your mobo is dying my old Q6600 rig died in the same way, was sad day loved that Cpu

I hope not its not even 6 months old!!
Might just send the system back to overclockers and get them to check It it's under warranty so... Will phone them and see what they say.

Roalith · 5 Aug 2012 at 12:14

Does it do this?

chris-82 · 5 Aug 2012 at 12:23

Hahaha yeah pretty much,but then switches back on again.
It only does it every so often like a couple of times a month

Phemo · 5 Aug 2012 at 12:29

Yeah mine does this occasionally. I've got no idea why but it never did it when I was running the thing at stock speeds for a few months so it's related to the overclock somehow. Never bothered to track down what causes it exactly.

jeckulz · 5 Aug 2012 at 17:42

Mine did this for a while.
Was pulling my hair out.
Turned out to be the 9 year old power switch had become sticky and would stay latched when I pressed it, then pop up after loading telling the PC to switch off. I replaced it (lian-li aftermarket support is awesome) and now all is well.

Remove your power switch wiring and short the terminals with a paperclip or screwdriver to boot it and see if this helps.