Hey there,
I have read a lot of forum posts online for my issues and none seem to fit exactly, so I wanted to share--maybe get some help, but also track what might fix it for others with the same problem.
So, in order of occurrence, the first problem: sometimes, when I try to boot up from sleep mode, it won't. Pressing the power button does nothing (no lights, fans, sounds, etc.).
The second problem, which has occurred more regularly in recent weeks: while gaming, my PC turns off. Then it will not power on. The power button does nothing.
These are the only issues, which I reiterate because what I've read of other systems with these problems, they have additional symptoms or vary slightly.
To resolve both of these, I turn off my PSU, unplug the power cable from the PSU, and then unplug the 24-pin PSU-to-Mobo cable on the motherboard end. After waiting a minute, I reseat it, and then the PC will usually turn back on. Occasionally I will need to wait longer and will repeat this process. In the first case, when attempting to reboot from sleep and going through this process, it will reboot to my desktop directly rather than from a fresh boot up.
Edit: The most recent time my PC shut off, I only turned off the PSU and unplugged it, waited a little while, did not touch the 24-pin connector, and it powered on.
Temps are fine. My cpu stays within 40 to 60 C when under various load (games, stress tests, benchmarks). My gpu maxes out at 55 C.
My system, built in second half of 2016:
MSI z170A SLI motherboard
Intel i5-6600k (OC to 4.4ghz)
2 x 8gb G.Skill TridentZ DDR4 RAM 3200 (14-14-14-34)
MSI gtx 1070 (OC to 2088mhz)
Seasonic 660XP2
PNY 480gb SSD
Displayport 1.2 cable included with monitor (Dell), which does output 144hz 1440p.
I have made sure that my drivers are up to date, and I even updated to the latest bios (from 3.60 to 3.70), and the second problem (sudden shut off) persists. It has not been very long since these updates, so perhaps the stuck-in-sleep-mode problem will also happen again.
Edit: it was unable to wake from sleep mode (blue power light flashes, but the button does not boot it back up).
From my understanding, this typically occurs with bad PSUs and less commonly with non-certified Displayport cables. (Apparently bad DP 1.2 cables can send a 3 or 5v charge into the gpu, but I do not need to unplug mine in order to get my PC to boot.) My cables are all firmly seated, with one exception, the case's usb 3.0 cable to the mobo's usb 3.1 pins can become a little loose due to its location and the size of the adjacent gpu. Data transfer works through those ports. Lastly, I have tried plugging in the PC to both a power strip and directly to the wall (always to the same pair of outlets). Nothing else loses power, so it would seem to be internal to the computer.
Everything runs so well otherwise, as if these shut offs never happen! And then they do.
Any ideas and suggestions are greatly appreciated. Should I try a $20 certified Accell DP1.2? Or try to RMA the PSU or Mobo? Thanks to everyone who contributes to these forums. I've been an on-and-off reader for many years : )
I have read a lot of forum posts online for my issues and none seem to fit exactly, so I wanted to share--maybe get some help, but also track what might fix it for others with the same problem.
So, in order of occurrence, the first problem: sometimes, when I try to boot up from sleep mode, it won't. Pressing the power button does nothing (no lights, fans, sounds, etc.).
The second problem, which has occurred more regularly in recent weeks: while gaming, my PC turns off. Then it will not power on. The power button does nothing.
These are the only issues, which I reiterate because what I've read of other systems with these problems, they have additional symptoms or vary slightly.
To resolve both of these, I turn off my PSU, unplug the power cable from the PSU, and then unplug the 24-pin PSU-to-Mobo cable on the motherboard end. After waiting a minute, I reseat it, and then the PC will usually turn back on. Occasionally I will need to wait longer and will repeat this process. In the first case, when attempting to reboot from sleep and going through this process, it will reboot to my desktop directly rather than from a fresh boot up.
Edit: The most recent time my PC shut off, I only turned off the PSU and unplugged it, waited a little while, did not touch the 24-pin connector, and it powered on.
Temps are fine. My cpu stays within 40 to 60 C when under various load (games, stress tests, benchmarks). My gpu maxes out at 55 C.
My system, built in second half of 2016:
MSI z170A SLI motherboard
Intel i5-6600k (OC to 4.4ghz)
2 x 8gb G.Skill TridentZ DDR4 RAM 3200 (14-14-14-34)
MSI gtx 1070 (OC to 2088mhz)
Seasonic 660XP2
PNY 480gb SSD
Displayport 1.2 cable included with monitor (Dell), which does output 144hz 1440p.
I have made sure that my drivers are up to date, and I even updated to the latest bios (from 3.60 to 3.70), and the second problem (sudden shut off) persists. It has not been very long since these updates, so perhaps the stuck-in-sleep-mode problem will also happen again.
Edit: it was unable to wake from sleep mode (blue power light flashes, but the button does not boot it back up).
From my understanding, this typically occurs with bad PSUs and less commonly with non-certified Displayport cables. (Apparently bad DP 1.2 cables can send a 3 or 5v charge into the gpu, but I do not need to unplug mine in order to get my PC to boot.) My cables are all firmly seated, with one exception, the case's usb 3.0 cable to the mobo's usb 3.1 pins can become a little loose due to its location and the size of the adjacent gpu. Data transfer works through those ports. Lastly, I have tried plugging in the PC to both a power strip and directly to the wall (always to the same pair of outlets). Nothing else loses power, so it would seem to be internal to the computer.
Everything runs so well otherwise, as if these shut offs never happen! And then they do.
Any ideas and suggestions are greatly appreciated. Should I try a $20 certified Accell DP1.2? Or try to RMA the PSU or Mobo? Thanks to everyone who contributes to these forums. I've been an on-and-off reader for many years : )