New PC endlessly restarting by itself.

[azmura]

Originally my old pc was dead (6 years old) so I did a full upgrade. My New pc work fine for about 5-6 days (I originally had a different motherboard and Memory) After turning on my pc it would start this loop up after being on for about one to two minutes. It would turn on and off all by its self endlessly. At first I thought it was memory problem and tried switching in out sticks of ram and even buying two other sets of RAM. (The ram I have now is down in the build info) I then found some info about a windows 10 problem that was causing something similar to this. So I formatted my hard drive and tried to download windows 7. The endless restarting loop didn't go away. After that I though it might have been a motherboard problem and I got a new one. (the motherboard I have now is down in the build info.) Sadly I am still having this problem and I am un sure of what causing it.

PS: Sorry for making this long.


Build -------------------------------------
PSU - Thermaltake Smart Series 550W
Mobo - ASRock Z97 Extreme4/3.1
Memory - G.skill DDR3-2133 4Gx2 Intel XMP Ready.
CPU - Intel core I5-4590 LGA 1150
GPU - Nvidia GTX 750 1GB GDDR5
Hard Drive - Seagate Barracuda 1TB
Case - AZZA Solano 1000R Red Japanese SECC Steel/Metal mesh in front MicroATX/ATX/Full ATX Computer Case
OS - Windows 10 Home 64bit

 

[1LiquidPC]

Sounds like it could be your PSU based on your description. You've already tried formatting your HDD, different motherboard and RAM, all to no avail. Typically, when a PC is powering itself off/on or restarting for no apparent reason, the power supply and heat are the two likely suspects to investigate further.

 

[azmura]

Sounds like it could be your PSU based on your description. You've already tried formatting your HDD, different motherboard and RAM, all to no avail. Typically, when a PC is powering itself off/on or restarting for no apparent reason, the power supply and heat are the two likely suspects to investigate further.

Is there anything I can do to figure out if it is my power supply "without investing" in a new one right away? Any signs I should be looking for etc?

 

[1LiquidPC]

How long does your PC run before this happens? Does it occur all the time? If so, you could try the "paperclip" test to see if it stays running. A quick Google search will explain the procedure. If it does stay on for awhile, you could run a benchmark/stresstest such as IBT or Prime95. I believe a version of OCCT has a PSU stresstest, though I'm not sure which version. If your system shuts off quickly or reboots, it's likely the PSU. Is your PC running long enough to check temps in the UEFI?

 

[azmura]

How long does your PC run before this happens? Does it occur all the time? If so, you could try the "paperclip" test to see if it stays running. A quick Google search will explain the procedure. If it does stay on for awhile, you could run a benchmark/stresstest such as IBT or Prime95. I believe a version of OCCT has a PSU stresstest, though I'm not sure which version. If your system shuts off quickly or reboots, it's likely the PSU. Is your PC running long enough to check temps in the UEFI?

It usually starts to do the reset loop after being on for about one minute some times less. Also PSU I have atm is a 80 Plus Bronze PSU. So its on the lower end.

 

[1LiquidPC]

Is this consistent that it's always about a minute? If so, you may want to proceed w/ the paperclip test. This means removing all the power cables from the PSU to your system. First, flip off PSU power switch, then unplug PSU from the wall socket, Disconnect the 24-pin connector, the 4/8 Pin CPU connector, the SATA power cables to drives, and any 4pin Molex connectors you may have. After this, you shouldn't have your PSU plugged into anything. Then, looking at the 24pin connector, find the socket w/ the green wire(there is only one). Beside it, there should be a Black wire(ground). Just plug the ends of a paperclip into this two sockets so it's making contact w/ the pins inside. Then, plug in the PSU to the wall again, and flip the power switch on it. The PSU should power up and the fan should spin. It should stay on until you shut if off. Leave it run for awhile to see what happens. If it shuts off after a short time, you found your problem.

 

[azmura]

Is this consistent that it's always about a minute? If so, you may want to proceed w/ the paperclip test. This means removing all the power cables from the PSU to your system. First, flip off PSU power switch, then unplug PSU from the wall socket, Disconnect the 24-pin connector, the 4/8 Pin CPU connector, the SATA power cables to drives, and any 4pin Molex connectors you may have. After this, you shouldn't have your PSU plugged into anything. Then, looking at the 24pin connector, find the socket w/ the green wire(there is only one). Beside it, there should be a Black wire(ground). Just plug the ends of a paperclip into this two sockets so it's making contact w/ the pins inside. Then, plug in the PSU to the wall again, and flip the power switch on it. The PSU should power up and the fan should spin. It should stay on until you shut if off. Leave it run for awhile to see what happens. If it shuts off after a short time, you found your problem.

Sadly all my cords are black. I couldn't find green wire for the life of me and I don't want to guess randomly at what it may be. I am going to borrow a friends psu to test and see if my pc will work. Crossing my fingers that it will run. Thank you very much for all information you have provided.

 

[santimarro1]

It may be the PSU (It is most likely the PSU), but it occurs to me it could also be that the heatsink isn't properly instaled or the thermal paste is worn off/poorly applied. So, after you do the paperclip test I would suggest trying uninstalling the heatsink, cleaning the old thermal paste, apply new thermal paste and reinstall.