PC powers up for 1 second and switches off

jwilliamson47 · 2 May 2015 at 13:29

Hi there,

I've recently encountered an issue and my PC powers up for about a second then immediately shuts down again. I thought it was due to the motherboard, but tried a brand new one and still does exactly the same thing. I'm presuming it's either the PSU or my CPU.

Any ideas?

stulid · 2 May 2015 at 13:31

What parts do you have?

jwilliamson47 · 2 May 2015 at 13:35

MSI Mpower MAX AC Motherboard (Z87)
Intel i7 4770K
Gigabyte G1 Gaming GTX 980
Noctua NH-U14 CPU Cooler
Superflower 1000W 80+ Gold Power Supply
3TB WD Mechical HDD
480GB Seagate SSD
16GB Avexir RAM

Thanks.

stulid · 2 May 2015 at 13:37

Disconnect the drives.

Take the GFX card out and hook upto the board.

Single stick of RAM.

jwilliamson47 · 2 May 2015 at 13:42

stulid said:
Disconnect the drives.

Take the GFX card out and hook upto the board.

Single stick of RAM.

Tried that but no effect. Powers on for a second and lights up the LED trail etc then instantly switches itself off.

stulid · 2 May 2015 at 13:44

And its the 2nd board you said.

You can try the paper clip test on the PSU and see if it stays on for longer.

Then err have a look at the socket pins.

jwilliamson47 · 2 May 2015 at 13:46

stulid said:
And its the 2nd board you said.

You can try the paper clip test on the PSU and see if it stays on for longer.

Then err have a look at the socket pins.

Thanks I'll give that a go! If not might try a friend's G3258 and see if the board boots then,

dacads · 2 May 2015 at 14:08

You tried the other stick of RAM on its own? If testing the PSU and CPU does nothing then I'd run memtest

Steampunk · 2 May 2015 at 14:11

No warning beeps or boot diagnostics/numbers on the motherboards to give you a clue?

jwilliamson47 · 4 May 2015 at 10:49

Apologies for the late reply.

Tried a cheap G3258 and works perfectly so must have been the CPU