Computer Sound and Visual Glitches

[alexprescottt]

So I have a windows PC with the graphic card "GeForce GTX 750 TI"

Recently my computer has started glitching on the sims and everywhere else (youtube etc) with sound glitches every few seconds and my sims game will pause for a split second and then continue. Ive realised this issue is not to do with the sims because it does it on the computer everywhere else. Does anyone know what  could do or have experienced a similar thing?

Ive done a clean wipe of the computer but things are still showing up in my folder from years back and I also removed CC which also didn't help 

Thankyou