[SOLVED] pc shutting down

[pandasmash]

hi guys and gals
not been on in ages but having a few issues and hopign you can help.
built my pc about 7 years ago and its great. just upgraded the gpu in that tiem and no issues.
but now when i turn it on i get about 20minutes of browsing before it shuts down. then if i turn on again i get to login then its off again.
i had cpu core temp running and nothing was going above 38C.
i took the gpu out and ran off the motherboard and still it shuts down.

as my pc is old should i just buy a new motherboard and psu? or ram?
im not as tech minded as i used to be so simples fixes or things to check are good.
checked the event manager but wasnt sure what to look for.
any help appreciated.
as i dont use it as much as i used to cheap fixes are great!

cooler is clear of dust. is it worth re-doing the thermal paste?

pc specs:-

CURRENT GPU AND POWER SUPPLY: GeForce GTX 1060 Windforce OC 6gb and Corsair Enthusiast Series TX750 V2

OTHER RELEVANT SYSTEM SPECS: Corsair 8GB 1600MHz CL9 DDR3 Vengeance , i5 3750k, 120gb ssd (need a bigger one!), NZXT Switch 810 , MotherboardAsus P8Z77-V LX, Corsair H100 cooling

apologies for the vagueness of the post as im not sure where to start. seems to me to be temperature orientated as the first time i turn it on i get 20mins then i get 30 seconds. but the core core temp programme i was running didnt flash up.
anything i have missed just ask. and sorry for the long post!

 

[DSzymborski]

hi guys and gals
not been on in ages but having a few issues and hopign you can help.
built my pc about 7 years ago and its great. just upgraded the gpu in that tiem and no issues.
but now when i turn it on i get about 20minutes of browsing before it shuts down. then if i turn on again i get to login then its off again.
i had cpu core temp running and nothing was going above 38C.
i took the gpu out and ran off the motherboard and still it shuts down.

as my pc is old should i just buy a new motherboard and psu? or ram?
im not as tech minded as i used to be so simples fixes or things to check are good.
checked the event manager but wasnt sure what to look for.
any help appreciated.
as i dont use it as much as i used to cheap fixes are great!

cooler is clear of dust. is it worth re-doing the thermal paste?

pc specs:-

CURRENT GPU AND POWER SUPPLY: GeForce GTX 1060 Windforce OC 6gb and Corsair Enthusiast Series TX750 V2

OTHER RELEVANT SYSTEM SPECS: Corsair 8GB 1600MHz CL9 DDR3 Vengeance , i5 3750k, 120gb ssd (need a bigger one!), NZXT Switch 810 , MotherboardAsus P8Z77-V LX, Corsair H100 cooling

apologies for the vagueness of the post as im not sure where to start. seems to me to be temperature orientated as the first time i turn it on i get 20mins then i get 30 seconds. but the core core temp programme i was running didnt flash up.
anything i have missed just ask. and sorry for the long post!

If your temperatures aren't suspicious, there's really no need to re-do the thermal paste. I don't really suspect temperatures here. Intel CPUs aren't as hard to measure the temperature of and you don't have a situation like some people have when they, say, run a 125W CPU on a cheapo AM3+ motherboard and the VRMs become the temperature of the sun (and the sensors don't report it).

The TX750 was a quality power supply, but it's 7 years old. Is the fan running on the power supply? It wouldn't be a bad idea to swap it out; buy from a store that doesn't have an onerous return policy for power supplies just in case it doesn't do the trick.

 

[pandasmash]

fan still running
taken both sides off and all looks ok.
is there some sort of diagnostic programme i can run or such like?
or just buy new bits and crack on? maybe theres a article or forum post that i could do stuff in a logival order?