[Help] Unsure which component is faulty

[Punkroses]

Hi, I've been having problems with my PC later and I'm having trouble determining which part of the PC is causing them as the problems are intermittent.

Here's a list of problems I'm facing.
Unable to boot up, occasionally.(Rectify by switching off main power supply and switch it back on 5 minutes later)
CPU Usage at 100%, occasionally. (Rectify by restarting PC)
Boot up without Display, occasionally.
Auto Restart.
Graphics Kernel Driver crashing.

Running on Windows 7, drivers are all updated.

My PC specs
CPU - i5 2500k
GPU - EVGA GTX670
PSU - Corsair AX850

 

[royfrosty]

Hi, I've been having problems with my PC later and I'm having trouble determining which part of the PC is causing them as the problems are intermittent.

Here's a list of problems I'm facing.
Unable to boot up, occasionally.(Rectify by switching off main power supply and switch it back on 5 minutes later)
CPU Usage at 100%, occasionally. (Rectify by restarting PC)
Boot up without Display, occasionally.
Auto Restart.
Graphics Kernel Driver crashing.

Running on Windows 7, drivers are all updated.

My PC specs
CPU - i5 2500k
GPU - EVGA GTX670
PSU - Corsair AX850

There could be a lot of issues to it.

1. a failing hdd.

2. A virus that causes your cpu usage to be on 100% usage most of the time.

3. Boot up without display could be a lot of issues, either with gpu overheating or gpu error due to drivers need some updates.

 

[Louisloo]

Showing signs of PSU failure.

 

[tarui04]

I think it's psu issue as well

 

[ykgoh]

You need a gay brand PSU to make your CPU think straight again.

 

[Punkroses]

Thanks for the help!