Computer shuddering Issues

[Callum Willis]

When i use my computer regardless of what usage it's at, out of the random it will shudder for 5 seconds then go back to normal, Its like my computer freezes for a short second and it repeats for like 5 seconds or more (not too long) but its quite frustrating specially when playing games, listening to music or watching movies. (This problem occurs like twice a day or more so its not constantly)

When this problem does occur my CPU usage goes up to 100%, RAM and Hard-Drive are fine they stay low percentage wise. I've checked for RAM issues and no problems have been addressed by my OS. I have a schedule for a defrag every month, I disk clean up as well every week or so. I tried removing files to see if it could be a virus of some sort but i can't find the problem.

Computer Specs:

OS: Windows 8
CPU: I3 3220 3.30GHz
RAM: 8GB RAM
GPU: GTX 660 MSI 2GB
HDD: 500GB
Power supply: 500w

Anti Virus is windows defender.

 

[Tradesman1]

What PSU? Also what's the model of the DRAM?

 

[Callum Willis]

Cooler Master Elite Power 500W Power Supply and GeIL Black Dragon 8GB (2x4GB) DDR3 PC3-10666C9 1333MHz Dual Channel Kit
also O/S is 64bit i forgot to mention

 

[Tradesman1]

Might be PSU, think I'd try raising the DRAM voltage + 0.06 and see if that helps, may simply not be regulating correctly

 

[Callum Willis]

I recently went into the Bios and changed the RAM settings mhz to auto from 1330hz(simalar) since then i havnt expirenced this problem since ive done that. so fingers cross it wont come again

 

[Tradesman1]

Keep us updated

 

[Callum Willis]

Been a day or 2 and the shuddering has decreased only happned once in a matter of 2 days which before was 3 - 4 times a day