Windows get freezing randomly and no response

Hi, I have a fresh new install of windows 7 / 64bits
16gb RAM (4x4) DDR4 Hyperx Predator HX421C13PBK4/16
i7 5820k
Mobo: X99-UD4
Video: Geforce GTX 960

I reinstall windows because one day my PC gets freezing, after that just before windows starts i was getting the blue screen of death
Then I reinstall windows 7, but still my computer is getting freezing all days (this time no blue screen of death),
It happens 1 hours after I start my computer or 10 hours after, but I am getthing this behavour all days and is very anooying
I have 4x4 memories of RAM, to be sure my ram is not the problem, i remove 3 memories and left only one, then I change the memory from different slots and the issue still happening, so I think ram is not the problem

Any help will be appreciated

This may be the cause of virus, malware, etc.

Do go and download
SUPERAntiSpyware | Remove Malware | Remove Spyware - AntiMalware, AntiSpyware, AntiAdware!
SUPERAntiSpyware (free version) and then select "Scan this computer" and next page "Quick scan".
Alternately, you can use any other antivirus, etc. I used thisSuperantispyware as
This is to remove any virus, spyware, etc; before you continue.

If the problem still exist, then post here.

The freezes may seem random, but most likely are not. Run a hard load on your computer for a while and see if you can make it crash. Then look for weak links.

Check the obvious first - cooling. These errors frequently come from an unstable hardware system. Blow out the dust-bunnies. Use Speccy or similar to monitor all your system temps. If it's a new build, check your RAM voltages etc are all in spec.