Computer Randomly Shutting down

[acecold3]

I've had this problem for about 3 weeks now, and have been on the phone with my motherboard manufacturer's support team, replaced my hard drive, and have run thorough malware scans and none of these seem to have found and fixed my computer's issue of shutting down at the log in screen or shortly after logging in normal or safe mode, and the time usually varies with this as well. I'm lost and don't know where to look next and was hoping someone could help me. I just built this computer about 4 months ago and it worked fine until this started happening. When it shuts down, it doesn't start itself up either and I haven't gotten a blue screen during any of this.

 

[bad_eyes83]

sounds like a heat issue

 

[corcorand82]

You need to run some temp checks.
I suggest using GPU-z and running furmark. Tell me what the temps read.
RUn SYSfan and tell us the temps.
These should hep us pinpoint the issue.
You may have to re-apply the thermal paste.

 

[bad_eyes83]

my i7 4790k didn't like the stock heat sink and fan, tossed the hyper 212 on till my cooler comes in

 

[acecold3]

whenever i check the temps in BIOS right after it shuts down they aren't ever over like 35-40 degrees C

 

[bad_eyes83]

if it turns on right away after it shuts down it more than likely is a power supply then, but this sounds like a heat issue. clean the cpu off of old thermal paste and put some new thermal paste on see if that works, that is the cheapest try, next cheapest is a new cooler for the cpu

 

[acecold3]

I left it in BIOS for like 2 hours and it stayed on, so I doubt its my heat sink or paste. Unless its just because its not under load in BIOS

 

[bad_eyes83]

bios does little to no load, it will only generate a moderate heat, so that is no help. no load no extra heat generated. my cpu didn't like bf4 with stock HSF. Go and try a game with something to record temps to see what happens. which cpu do you have?

 

[acecold3]

I've got an AMD FX-6300 and I'm using an after market cooler, but perhaps I was too sparing with the thermal paste when I installed it. When I looked at the temperature after letting it sit in BIOS it was around about 40 degrees C and that does seem awful high just for sitting in BIOS. As for testing it under actual load, I'm not able to stay on long enough to install and run a game of any kind. Is running my OS something that puts load on the CPU and something that could cause an overheat?

 

[bad_eyes83]

remember to AMD's do tend to run warm, try cleaning the thermal paste off with isopropylene, 99% is the best I find. apply about the size of a small pea and re seat it, and also remember it takes time for the paste to cure so it won't be as good as it can right away. try that and see what happens. A gamer buddy has the 6350 i believe or 6300 he idles in bios like 53c. make sure the dust bunnies haven't made a hom int he heatsink on the cpu as well. i will think of other things as well buys racing after a 18 month old and a 3 year old

 

[acecold3]

I've turned on my computer and downloaded HWmoniter and it appears to be holding around 35-40 degrees still and what baffles me is that it has not turned itself off yet. I've started downloading windows updates again and that seems fine. I'm wondering if running windows defender offline helped, but it didn't seem to turn anything up so I'm not so sure if there was a rootkit there causing this or not. I'm thinking it may be my motherboard chipset drivers or whatever. Whenever I downloaded those off the CD that came with it the shutdowns seemed to start happening. For now I'll just download my GPU drivers and some other utilities and see what happens. Does anyone think they have an explanation as to why this was happening and then stopped all of the sudden?

Update: It shut itself down again, after I installed malwarebytes and tried to run it it said something about too many 16-bit programs being open. I also tried running Avast and superantispyware neither would open. Did I somehow pick up a bad rootkit? I was running HWmoniter the whole time, in between canceling the shutdowns as they came up and the temps never got over 41 degrees C

 

[corcorand82]

What cpu do you have?

 

[corcorand82]

What CPU loads are you experiencing (HWmonitor should say this)

 

[acecold3]

I've got an AMD FX-6300 and as for the CPU loads, all I see in HWmonitor are temperatures, voltages, and fan speeds