Computer not starting.

johngaz1 · 24 Aug 2012 at 16:26

Hi guys, just got my PSU back (old one broke so sent it back) and got a new one today - http://www.overclockers.co.uk/showproduct.php?prodid=CA-059-OC&groupid=701&catid=123&subcat=1098.

I've set everything up, put all the cables in ect. however when I go to turn my PC on, everything seems to go on for about 1second then switches off. My blue led fan goes on (I see a flash of blue) the fan on my CPU goes on for a second. Do you guys have any ideas? Please help!

Uncle Petey · 24 Aug 2012 at 16:26

Did you manage to connect the 4pin cable?

johngaz1 · 24 Aug 2012 at 16:28

Uncle Petey said:
Did you manage to connect the 4pin <a class="ktg6us78hf8vdu7" href="#">cable</a>?

Yes, I had to split the 8pin one (didn't occur to me at all in the hour I spent scratching my head). However still no luck in the computer working

Uncle Petey · 24 Aug 2012 at 16:31

The old PSU that broke, was that used on the same system? If so, are you sure it was only the PSU that went?

johngaz1 · 24 Aug 2012 at 16:36

Yes, the old PSU I had was http://www.overclockers.co.uk/showproduct.php?prodid=CA-167-CM&groupid=701&catid=123&subcat=1103

and yes, my mate put his PSU in and it worked perfectly.

johngaz1 · 24 Aug 2012 at 16:38

One other thing. After the computer goes on for a second, the PSU makes a low quiet sound after everything else goes off. It's like a hum

Uncle Petey · 24 Aug 2012 at 16:42

It's a pain, but try seeing if your new one works on his rig. If not, you know what to do

If it does work, then I'm stumped...

Other than that, all I can suggest is obvious stuff like making sure everything's plugged in nice and tight.
I'm having no problems with mine, but a dodgy one makes it's way through the net every now and then.

johngaz1 · 24 Aug 2012 at 17:11

I've double checked everything and still no joy! Argh this is annoying!

johngaz1 · 24 Aug 2012 at 18:39

Changed the socket I was using, took everything out and back in again, still not working. That kind of low squeel is still coming out of the PSU when I turn it off. Does anyone have any ideas?

chipperhead · 24 Aug 2012 at 20:01

Like uncle petey said, you need to try your psu in another machine.
It's a process of elimination.

Jim89 · 24 Aug 2012 at 20:21

Like the others said: try the PSU in another rig. Also check your MOBO isn't touching the back plate of the case and shorting out somehow.

johngaz1 · 24 Aug 2012 at 20:47

Yeah my mate is bringing his rig down tomorrow so I can check it all then. It's a brand new PSU so the chances of it being the PSU is slim I would have thought. I took all the wires apart, even did the CPU again, put it all back together again and still the same problem, everything starts for 1second then turns off. I've taken out the battery for 1minute, put it back in. I've taken out the RAM with the battery and put 1 stick in each slot (with the battery in) and nothing. I'm running out of options, no idea what to do.

keithfa26 · 25 Aug 2012 at 11:35

Try running it all outside the case and see what happens

dainmcp · 28 Aug 2012 at 12:38

Hi Johngaz, I was wondering if you found the problem/solution to the issue as I have the same issue where it will power on for 1 second and then turn off. Thanks!