Mainly i thing this is my DVD-Rom failing. Let me start from the beginning. At first i wanted to install Batman Arkham City i put it in started installing and at the beginning the whole windows completely hanged. I restarted the pc thought it was the disc that was bad put in Batman: Arkham Origins and then a little after the setup windows hang again. Now i thought the windows is corrupt i installed a new windows but Dvd-rom stops reading the disc at "Expanding Files" at various times, sometimes at 8% sometimes 24% and sometimes 59%. Basically it reads and than stops and again read and than stops. Recently one of my HDD failed too so i bought a new HDD and checked it with WD Life Diagnostic Tool and ran both Quick And Extended Test no problems. So my HDD was not bad either. And what the fun part is that I installed the windows 4 times just cause of this hang up. And all of the times windows hang at Expanding Files and than again starts reading and than again hangs. So all this leads to Dvd-rom being bad right? Sorry for such a long message just wanted to explain everything and leave nothing behind. Thanks in advance. Another thing i changed the motherboard settings a little bit cause the Windows wasn't installing so i Disabled the Intel Speed Step but i don't thing that would be the cause.