Pc just restarts randomly. Pls help

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Hardikgala

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Mar 14, 2014
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My Pc is just restarting randomly at random intervals. Pls help me out.

My Pc built:
Intel i7 4770
Motherboard: B85M-D3H Gigabyte
Ram: DDR3 8Gb Kingston Hyperx
No Grapic CARD
PSU: Corsair VS550
2 WD 1Tb HD

Things I Have already done:
1) Restart my pc LOL
2) Have checked my ram through windows memory diagnosis.
3)Scan for virus AVG
4)Changed a setting in windows10 regarding "automatic restart during system failure"
5)Applied new thermal paste to stock heat sink.
6)Have cleaned all dust from fans etc
7) removed all other hardware. currently only monitor mouse keyboard and wifi adapter are connected.
8) Changed Ram to other slot.
9)Did memtest86.: It completed pass1 with no errors and then did a restart on its own (which i suppose should not have happen)
it did the test again and slept and woke you it showed time as 1hr30min (must have again restarted during the test).
Did the test one more time this time it competed 2 pass with no errors. then did a restart.

Additional info:
1)I am attaching few screenshots of my pc temperature, ram status and motherboard status if it may come in any use.
2)Psu fan, Stock fan working plus other 4 fans also working.
3) No blue screen

Links
Motherboard info/ power supply:
https://drive.google.com/open?id=0B3gO_BTrCUPDUXVncXlkb2V6NGM

Cpu info
https://drive.google.com/open?id=0B3gO_BTrCUPDaDBOd18xOFkxbWM

summary info
https://drive.google.com/open?id=0B3gO_BTrCUPDaFNDYjZvWjJEN3c
 
Solution
morpheas768
Have you run memtest without any hard drives connected? Sometimes a faulty SATA cable will cause random restarts without blue screen or anything.
It is good that you disabled automatic restart during failure from windows. Since there is no blue screen, it points to a real hardware issue, as opposed to an OS/software issue.

1. First test without any Hard Drives connected to the system. I know you need an HDD to log into windows, but for now dont.
Run memtest and let it go for hours. If it doesnt work for hours without restarts, then go to step 2.

2. Like the user above has suggested, another common issue is short circuits with the mobo. Is it a new or relatively newly built system? The probability rises if its a newly built system. In...
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iXeon

iXeon

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Jul 6, 2015
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well, both your ram and cpu are supported by the motherboard.sometimes it could be the HDD that causing the whole thing and it's because it might have some bad sectors in some partitions, i say try to test the system with a new HDD and see if it's restarts.
sometimes it's a short circuit happening it the case, some part of the motherboard or something is being connected to the case body randomly, may be and then for safety purposes PSU restarts the system, it might be from that, check it.
 
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morpheas768

morpheas768

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Mar 3, 2009
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Have you run memtest without any hard drives connected? Sometimes a faulty SATA cable will cause random restarts without blue screen or anything.
It is good that you disabled automatic restart during failure from windows. Since there is no blue screen, it points to a real hardware issue, as opposed to an OS/software issue.

1. First test without any Hard Drives connected to the system. I know you need an HDD to log into windows, but for now dont.
Run memtest and let it go for hours. If it doesnt work for hours without restarts, then go to step 2.

2. Like the user above has suggested, another common issue is short circuits with the mobo. Is it a new or relatively newly built system? The probability rises if its a newly built system. In any case, try removing the motherboard with all components attached to it, and run memtest again, but only with 1 RAM stick installed. It doesnt matter if memtest found no errors so far, try only 1 of them installed. Basically remove the mobo from the case, and let it sit on a clean surface that is preferably on an anti-static bag like the one your motherboard was in from the manufacturer. Run the system barebones.

3. If restarts keep happening, then the next thing to test would be the PSU. It may just be faulty, it doesnt matter if its a Corsair. Even good brands have some faulty units from time to time.
The best way to test this is to borrow a PSU from a friend that you know it works, or use one you already have (if you do) as a spare. If you cant do either, then if your PSU is under warranty send it back for testing.

There are other reasons why this might be happening, but try these first.

Your links are not working for me btw, they are dead for some reason.
 
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