Computer turns off after 3 minutes

[Haris Mahmood]

Hi everyone

I am having a very bad issue with my computer.

I opened the case and took out the heat sink for the cpu and applied thermal paste to the cpu , I plugged everything back in and now when I power up my PC it restarts instantly and stays powered on for around 3 minutes and turns off , when this first happened , I noticed the windows loading screen lagging but now I don't event have any video signal for some reason so can't see what's happening on screen.

 

[i7Baby]

Why did you change the thermal paste?

You obviously haven't done it correctly - the CPU is getting hot then shutting down. Try again but be a lot more careful.

 

[Haris Mahmood]

I changed the thermal paste with better artic silver paste as I want confident with the stock paste.

 

[i7Baby]

You obviously haven't done it correctly - the CPU is getting hot then shutting down. Try again but be a lot more careful.

 

[Abmario]

Ensure you applied the thermal paste properly and make sure heat sink is well seated. If your hsf is not installed properly, your cpu temperature will go high and your system will shutdown itself to protect your parts from damage.

If heat sink is ok, try reset - press "mem ok" / bios switch in your motherboard.

 

[Haris Mahmood]

The thermals paste applied is a bit too much , I used a pea size but think a little too much , will that effect anything?

 

[Haris Mahmood]

Here's a picture of the cpu
http://gyazo.com/9944915434503c9d5563a8e2795b97f9

 

[Icaraeus]

^ That would explain it. Clean it off, probably use alcohol for good measure, then apply a pea-size amount in the centre and spread it evenly throughout the surface of the CPU.

 

[Haris Mahmood]

^ That would explain it. Clean it off, probably use alcohol for good measure, then apply a pea-size amount in the centre and spread it evenly throughout the surface of the CPU.

http://gyazo.com/b0373806827b7f34bae21fecb3149a5c
Ok I have cleaned the CPU , should I reapply the thermal paste now?

 

[i7Baby]

Of course!

 

[Haris Mahmood]

Ok I have applied new thermal paste and video signal has come back, but then the computer got stuck on 'starting windows',but after few min said updating registry with windows logo then it restarted any gigabyte pop came up on boot saying bios isn't configured correctly and there's a problem with the boot , I selected restore default bios settings , now it restarted and is stuck on starting windows and sometimes a blue screen comes up with text and the PC just turns off...

 

[Abmario]

Look for "mem ok" button inside your board.. Turn ON your pc then press hold this button for few secs until your system reset.

If bsod still there.. tell us what is your motherboard, if it has USB bios flashback option... use different pc, download latest bios save it in the usb... look for USB flashback bios port... then update..

After that try repair your Windows OS..

 

[Haris Mahmood]

Ok will so that , currently I managed to boot up windows install disk and it's installing windows to my HDD as I thought it was my Windows that was corrupt , I will do the 'men ok' after this finishes do you think my CPU is dead?

 

[Abmario]

You don't have to do that if it POST and working... It's probably your application of thermal paste / heat sink as everyone here were saying.. Your CPU should be fine, motherboard monitors your cpu condition, usually board get damaged first before cpu..

 

[Haris Mahmood]

Ok , windows is installing right now and I will keep you updated after it's done , hopefully it will load windows , I have noticed the PC is quite slow , last time it installed windows twice as faster.

 

[Haris Mahmood]

Success , windows is working now and I have ordered a new cooler master Evo hyper 212, there's only one problem now , there's no signal coming from the gpu but there's signal coming from the motherboard hdmi?

 

[Abmario]

update your graphic card driver.

 

[Haris Mahmood]

update your graphic card driver.

Done! Everything is working now !

Is 40 degrees at idle normal?

 

[Abmario]

Do you mean GPU Temp? What card are you using? >25C to 45C idle is normal.. under load 30C to 90C.. But it depends to your card.. if you have GTX-550ti and getting 45C while idle is not normal.

 

[Haris Mahmood]

No I'm talking about my cpu
I7 4790k

 

[i7Baby]

40C is fine.

 

[Abmario]

That's fine, 30-50C is ok.