Black screen after windows logo

[christopunch]

Everything was working fine on my system yesterday. Today i turned on my system and my Asus Logo popped up, then the windows logo, then Windows logo with loading circle, then black. After about 2 mins i pressed Ctr/alt/del then my lock screen popped up. 1 test i (pressed nothing it took about 2-3mins to get lock screen). 2 test (i waited a min or so then pressed left click and it popped up a few seconds later) After testing repeatedly i dont know what the problem is...

 

i can get into windows it just takes longer (alot) than usual.

 

Build

i7-4790k

Gtx 970

Windows 8.1

Thanks for your responses

[Arcanekitten]

try a fresh install of windows else wait for 10 only 5 days away Hype !