HELP! System won't boot up

lflowers · 18 Oct 2011 at 21:08

Hi everyone,
I built my new system a couple of days ago and has all been fine until last night when i tried to power on. I pressed the on switch and the fan and LED's came on and then immediately went off. This happened a couple of times and then it worked fine. Tonight however, it was switched on for 3 hours and ran with no problems until i put it into sleep mode. When i came to boot it up again i had the same problem as the previous night except this time it would not boot up at all.
My spec is:
Krypton Z68 590i Intel Core i5 2500K 3.30GHz @ 4.40GHz Overclocked Bundle

Gigabyte Z68AP-D3 Intel Z68 (Socket 1155) DDR3 Motherboard

Kingston HyperX Genesis Grey 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit

EVGA GeForce GTX 550Ti 2048MB GDDR5 PCI-Express Graphics Card

Antec TruePower New Modular 750W '80 Plus Bronze' Power Supply

Microsoft Windows 7 Home Premium SP1 64-Bit - OEM

Zalman Z9 Plus Tower Case with Fan Controller - Black

Seagate Barracuda 7200.12 1TB SATA 6Gb/s 32MB Cache - OEM

TP-Link 300Mbps Wireless N PCI Adapter

LG GH24NS70 22x DVD±RW SATA ReWriter (Black) - OEM

Please can you help, thanks in advance.

lflowers · 18 Oct 2011 at 21:38

Hi Roblam,
I have tried doing what you have suggested and it i still doing the same thing as before. Unfortunately i don't have another PSU to try.
Do you think there might be a fault with the PSU?
Thanks for your advice.

lflowers · 18 Oct 2011 at 21:56

Thanks, i will try these suggestions tomorrow and update you all.

lflowers · 19 Oct 2011 at 17:01

Hi all,
I have took out the peripherals and done the same with the hardware and it is still doing the same as before.
I'm just wondering before i do the CMOS reset will it delete the overclocked profile or will i simply be able to load it again if the reset fixes the problem?

lflowers · 19 Oct 2011 at 18:19

Thanks RJC i will try this now.

lflowers · 19 Oct 2011 at 20:47

Hi, clearing the CMOS seems to have solved the boot issue.

I was faced with this message after booting. Obviously I can reload the overclocked profile in the BIOS but is it safe to do so? There must be a reason for the problem in the first place? Thanks for your help so far.

lflowers · 19 Oct 2011 at 21:21

Thanks for your help RJC and Roblam! The problem has been sorted now and im back up and running at 4.40GHZ.