Computer Spikes

Hey all,

So for the past couple of months now, my computer has been having these lag spikes, in whatever I'm doing; playing games, writing a word document, even browsing the web! They're very short 1 or less seconds but happen every 4-5 seconds. The audio also throws off with it and makes weird noises when the spike happens. I've tried finding the issue via task manager, deleting and re-installing applications and even buying a new SSD. Specs: 

Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130708-1532)
Language: English (Regional Setting: English)
System Manufacturer: ASUSTeK Computer INC.
System Model: V9-P7H55E
BIOS: BIOS Date: 09/07/10 16:49:03 Ver: 08.00.15
Processor: Intel(R) Core(TM) i7 CPU 870 @ 2.93GHz (8 CPUs), ~2.9GHz
Memory: 16384MB RAM
Available OS Memory: 8152MB RAM
Page File: 3816MB used, 28847MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: 96 DPI (100 percent)
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 64bit Unicode


If anyone could help, if I need to supply further info, please do say so! Thanks

Have you attempted a fresh install of windows?

What PSU are you using? I doubt that its the PSU, But its not impossible.

3 times sir. Nothing has changed. 

update the firmware on your ssd and make shure its the ssd is set to AHCI mode in the bios.

Try running on one stick of RAM for a while and see if that stops it. If it doesn't try the other stick of RAM.