Computer died - need help troubleshooting

[Gary7]

UPDATE: Installed a brand new PSU and still have the same issue. Think it might be the mobo at this point. Anyone any ideas?

 

OP 

computer will no longer fully power on. It will run the cpu fan at 100% then seem to go fluctuate to a lower rpm indefinitely until I forcibly power it off

 

(Also started shutting down when it was moved or given a small knock)

 

It will also restart itself until I manually turn off the power supply. Sometimes powers on 10 times for 1 second each.

 

I really don't even know where to start here in terms of looking for the problem. PLEASE HELP

 

 

ORIGINAL POST

So recently I noticed that my PC will drop signal and shut down randomly and the CPU fan will ramp up. The sequence of events as follows

 

1. Gaming at normal gaming loads and temps (CPU 65c / GPU 70c)
2. Computer shuts down
3. LEDs on case stay on as well as CPU fan which gets a bit faster
4. Stays like this for about a minute then shuts down fully and reboots

 

I'm pretty worried about this and not sure where to start troubleshooting. 

 

 

Rig - None of my gear is overclocked

i5 4670k

MSI GTX 980

8GB HyperX Grey 1600 DDR3

MSI G43M Mobo

EVGA 500B PSU 

 

[Moonzy]

3 minutes ago, Gary7 said:

 

dying psu? its possible

[Gary7]

3 minutes ago, Moonzy said:

dying psu? its possible

I have no idea. The GPU and cpu seem to be fine. The psu is trash but I don't want to buy a new one if it won't solve the issue

 

[Moonzy]

7 minutes ago, Gary7 said:

I have no idea. The GPU and cpu seem to be fine. The psu is trash but I don't want to buy a new one if it won't solve the issue

is there other psu u can test with?

if the psu if still under warranty and its faulty, you can send it in

[admiraltrout]

try removing the graphics card, nvidia may be having an issue with the drivers. just a thought

[Jaggro]

Just now, Moonzy said:

is there other psu u can test with?

if the psu if still under warranty and its fulty, you can send it in

Sure sounds like a PSU issue, if at all possible definitely follow Moonzy's advice.

Quick question though, did you change any hardware before the problems started?

[Gary7]

Just now, Jaggro said:

Sure sounds like a PSU issue, if at all possible definitely follow Moonzy's advice.

Quick question though, did you change any hardware before the problems started?

The only hardware I changed was adding a 7v molex to 3x3 pin for case fans 

[Moonzy]

1 minute ago, Gary7 said:

The only hardware I changed was adding a 7v molex to 3x3 pin for case fans 

tried unplugging it?

[Gary7]

14 minutes ago, Moonzy said:

tried unplugging it?

Did that as well as GPU.

 

Powered on at one point but then died when I tapped extremely lightly on the case

[Moonzy]

1 minute ago, Gary7 said:

Did that as well as GPU.

 

Powered on at one point but then died when I tapped extremely lightly on the case

weird situation, but i really suspect the PSU is a gone case

perhaps try testing it with another psu (possibly 500~600W and above, and a reliable one)

[Gary7]

1 minute ago, Moonzy said:

weird situation, but i really suspect the PSU is a gone case

perhaps try testing it with another psu (possibly 500~600W and above, and a reliable one)

I think I'm going to have to buy a new one I don't have anything like that around

 

I'll grab an EVGA 650 watt gold rated

[Moonzy]

1 minute ago, Gary7 said:

I think I'm going to have to buy a new one I don't have anything like that around

 

I'll grab an EVGA 650 watt gold rated

the EVGA Supernova G2 650W is a good pick

[Moonzy]

2 minutes ago, Gary7 said:

I think I'm going to have to buy a new one I don't have anything like that around

 

I'll grab an EVGA 650 watt gold rated

but i suggest you take your computer into a shop and have them checked, would be a bummer if its not the PSU and you ended up with a spare

though u can use it in a future build but meh...

[Gary7]

4 minutes ago, Moonzy said:

but i suggest you take your computer into a shop and have them checked, would be a bummer if its not the PSU and you ended up with a spare

though u can use it in a future build but meh...

There isn't one competent pc shop in the whole of Ireland:(

 

Also I can return it to Amazon within 14 days

 

[Moonzy]

Just now, Gary7 said:

There isn't one competent pc shop in the whole of Ireland:(

welp, i guess your only option is to get a psu then

unless you have a friend nearby that is fine with borrowing you their computer for testing

[Gary7]

40 minutes ago, Moonzy said:

welp, i guess your only option is to get a psu then

unless you have a friend nearby that is fine with borrowing you their computer for testing

Just ordered one. I'm the only person I know with a custom rig.

 

I'll update this Thursday after install thanks for all your help!

[Gary7]

Well it wasnt the power supply.... I'm guessing the mobo at this point as there seems to be no power going to the mouse and keyboard  (both have leds)