Pc keeps shutting down , help needed

broxy bear · 29 Sep 2011 at 21:17

Hi guys ,

i have been having some serious issues with my PC today. My pc screen froze today and i had to switch the power off after 5 mins of a frozen screen. Now when i turn my pc on , it shuts itself down after about 30 secs. I have tried disconnecting the graphics card/ram/dvd drive/wireless network card and turning on but the same issue happens. i have very little Pc tech knowledge but the only thing i can think can be the problem is a faulty PSU.
the same problem happened 10 days ago but after 24 hrs of being turned off , i turned it on and it seemed to be fine until the problem came back today

Hopefully someone can help with other tests to determine the fault.

pc specs

amd phenom x2 555 black edition
ATI radeon hd 5750 1gb
4gb ram
cwt 450w psu
Coolit cooling system
750gb western digital HDD
foxconn motherboard ( not sure the model , the only details i can see on the board is a7gmx series a7vmx series Am2+)

broxy bear · 29 Sep 2011 at 21:36

i removed the battery for 5 mins , turned pc on and set time and date but upon loading to the desktop the pc shut down again :-(

broxy bear · 29 Sep 2011 at 21:58

I checked the fans earlier and as far as I am aware they were working as they.should , my CPU is cooled with a coolit systems Liquid cooler , I am not sure how to check if that's working

broxy bear · 29 Sep 2011 at 22:17

Booting up in safe mode results in the same problem

broxy bear · 29 Sep 2011 at 22:38

Not sure what unlocked cores means , so I would say no I have not

broxy bear · 29 Sep 2011 at 22:56

Thinking about it , I may have missed that check . I shall investigate it when I get home from my night shift

broxy bear · 30 Sep 2011 at 06:46

ok so i just had a look and the Psu fan is working, the fan on top of my case and the liquid cooler back fan is working , but the shutting down problem is still present.

broxy bear · 30 Sep 2011 at 16:32

i shall purchase a new PSU as i was going to get one as i was planning to get a radeon HD 6950 iceQ card .

UPDATE !!!

before i purchase a new PSU , i have a friend who just who just bought a new PSU , so he is going to lend me his previous 500w supply

broxy bear · 1 Oct 2011 at 12:30

Just to give another update , i completely stripped my pc down to its bare bones , disconnected every cable , cleaned every fan and removed cpu thermal paste and re-applied with a silver thermal compound . I reconnected everything and so far my pc is running fine :-)

note , i am using my original psu to which i thought was the problem

fingers crossed that that is the end to my problems and thank you to all that gave advice