Pc freez and random colors on screen

[Propphet]

It begon around 2 months ago, 

First once in 2 weeks 

and than more often now its freezing 3 times aday 

always 1 black screen and second screen is an random color.

 

Specs:

i7 860 @2.20 Ghz

4 X 2 Gb ram 2 X Corsair XMS3 TW3X4G1333C9  2 X Corsair ValueSelect 

Gtx 750Ti

Asus P7P55 LX

1 X 512 gb ssd samsung

2x 500 GB Hdd raid

550 Watt

 

Video : 

 

[Jasoman]

When does it freeze? When waking from sleep or while gaming? or both?

[Propphet]

For now it stopped i have no idee why and how but it didnt freez for the last week.