PC crashing, CPU?

TheLoneWolf989

Honorable
May 10, 2013
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CPU: i5 4570 - stock cooler
GPU: XFX 7870 Tahiti LE
RAM: 8GB Corsair Vengeance
PSU: Corsair CX600M
Mobo: Gigabyte H87 HD3
Case: Fractal Design Define R4 - stock fans
SSD: 256GB Samsung 840 Pro
HDD: 1TB 7200RPM Seagate Barracuda

My PC has been crashing when under load(gaming etc.) and won't restart after it has crashed for 20+ mins. I don't get blue screens or any errors. I decided to stress test the CPU with Prime95 and after about 12 minutes it hit 90c and crashed. Is it the CPU that is the problem and if so what cooler do you recommend for £30-40 max.
 

TheLoneWolf989

Honorable
May 10, 2013
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10,630


Everything was fine so I decided I would buy a CM 212 but before I did my PC won't even start now.
 

TheLoneWolf989

Honorable
May 10, 2013
85
0
10,630


It's ok, I've fixed it now. I unplugged some cables and it works fine again, now I'm just waiting for that CM 212.