Windows 8.1 64 sometimes hangs on login

[Oliver_9]

Ok, I am not sure if its hardware or software problem so please help.

When I boot my PC from sleep or a complete shut-down sometimes the PC will log me in but then freeze on the desktop. 

I can move my mouse but no programs will open and i cant shut it down I have to use the case buttons.

I have done a complete re-install of windows and this did not fix the problem. so if it is hardware could you please tell me what is most likely causing it. once the computer has successfully logged on (after several restarts) it works fine no other problems and iv checked cpu usage and that all seem normal...

 

Specs:

 

Microsoft Windows 8.1 64Bit

128GB Samsung 840 Pro Basic, 2.5" S (boot drive)

1TB WD Blue WD10EZEX SATA III 6GB/s 

8GB (2x4GB) Corsair DDR3 Vengeance 

MSI Z97 GAMING 5 Intel Z97, S1150,

Intel Core i5 4690K S1150, Haswell, 1

2GB MSI GTX 960 GAMING, Twin FrozrV

 

650W Corsair CS650M, Hybrid Modular

 

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Did you use KMSPico to activate your windows or use a torrented version?

I know a version of KMSpico does that lol.

 

KMSpico activates your windows everytime you login.

[Oliver_9]

nope i used a windows disk and the key provide from scan.com

[Oliver_9]

Found the problem after cry to myself many times, a lot of digging on the internet and by sheer luck, it turns out CPU temp was causing this problem hope this helps with anyone who might run it to this problem.