Sleep/Power On Issues (Advice)

Jaysquirrel · 1 May 2013 at 10:17

I need a bit of advice.

This January my old 500W PSU was on its last legs, I decided it would be a good time to pick up the new-ish Corsair CX 750w Modular PSU. For a while everything seemed fine.

However over the last 2 months I've noticed that when I try to turn my PC from standby or completely off, the fans will spin but the LEDs in my keyboard/mouse wont light up, then the computer shuts back off. When I try turning it on again it will do the same thing until I unplug everything and wait a few minutes.

At first I just dismissed it as a loose connection, since I'd unplug my PC, fiddle with the cables and it would work again. However I've gone over my setup from top to bottom, and there are no loose connections.

I also upgraded to a 7950 a month after I bought the PSU, however I doubt that could be causing any issues!

Since this is sort of a random issue I'm unable to repeat it, does anyone have any ideas what might be causing this?

otemu · 1 May 2013 at 11:02

Hi,

I had a similar issue not exactly the same, but when I used to turn on the machine lights would flash then it turn off, then the lights would flash on before everything came on. My issue was with the memory, one was loose in one of the slots after that was fine.

Maybe try a process of elimination, try booting with only cpu and one slot of ram on the motherboard and see what happens. Then add components to try locate the issue.

R088ieS86 · 1 May 2013 at 11:17

Have you overclocked your CPU at all? I know that Sandy Bridge CPUs don't like, or at least didn't like at the beginning of their life, waking from S3 sleep when overclocked.

Jaysquirrel · 1 May 2013 at 11:48

I did have an issue a month ago with 3 beeps (RAM issue code) when I powered my computer on, however I tested each stick then reseated the RAM and since then it's been fine. I think that was caused by me adjusting the CPU fan.

And yeah my 2500k is lightly overclocked to 4.3GHz, but I've had the CPU for over a year and only overclocked it around Dec/Nov.

It's really confusing me since it doesn't happen all the time.