Computer keeps freezing randomly, please help!

[leoncc]

I've just built a new rig for a friend, everything has installed fine, windows runs fine but I just keep getting random freezes every now and then, I'm clueless to what is causing it?

OCZ Gold 4GB (2x2GB) DDR3 PC3-10666C9 1333MHz Low-Voltage Dual Channel (OCZ3G1333LV4GK)
Logitech Illuminated Keyboard (920-001165)
Seagate Barracuda 7200.12 500GB SATA-II 16MB Cache - OEM (ST3500418AS)
Pioneer DVR-S18L 22x DVD±RW SATA Labelflash ReWriter - Black (Retail)
TP-Link 300Mbps Wireless N PCI Adapter (TL-WN851N)
Akasa Internal Media Card Reader (AK-ICR-07)
Gigabyte GA-H55M-UD2H Intel H55 (Socket 1156) DDR3 microATX Motherboard
Intel Core i3 530 2.93GHz (Clarkdale) (Socket LGA1156) - Retail
23 Dell P2311H LED
SStone 450W Strider ST45SF
1 SST SUGO SG02B-F SFF BLK GLOSS

The only thing I can think of is the memory? I will run memtest soon to check that.

Also everything is at stock/auto in the bios apart from the memory voltage which is set to 1.64v.

 

[leoncc]

So you have set the timings and voltage for the RAM manually? What sort of PSU is running the system?

SStone 450W Strider ST45SF is the PSU and I haven't set the timings as they are set correctly already, this is very annoying!

 

[leoncc]

when you say randomly is it ok if just sitting in windows doing nothing, but shuts down randomly once it starts doing anything?

I thought it was from intense processes like encoding and compressing zips but I just left it idle and it froze again while the screensaver was on.

I've just formatted again as I have tried everything I can think of, also going to update the bios as its on F9 and F11 says "improved memory capability"

Any other suggestions greatly appreciated.

 

[leoncc]

Ok it seems its the Intel HD Graphics driver, that just locks up the pc and I have to force a restart...

I have also disabled Aero but no help...

What now, buy a graphics card?