System Rebooting Unpredictably Without Blue Screen (Power Supply Problem)
System Rebooting Unpredictably Without Blue Screen (Power Supply Problem)
There have been some problems with my computer lately. It has been struggling to start and has restarted unexpectedly. About a week ago, even when plugged in and turned on, I had to flip the power switch on the PSU several times before it would turn on. Sometimes just turning the switch to the 'on' position also powers up the PC. Recently, the computer started randomly without any reason, no error messages, no blue screen, and it even makes the "tick" sound as if it was powered off. I’m not sure what’s causing this issue. It happened once yesterday and three times today, including when I was writing this question. I haven’t overclocked anything, my Windows installation is fresh (not related to the PSU), and nothing unusual has occurred.
The only problems I can mention are that I use custom cables for my power supply, which is because the original CPU power cable from the PSU doesn’t reach it properly, so I had to buy a different one. Another issue is with the power/restart cable connecting from the chassis to the motherboard—it seems to keep dropping out. I think this might be the main problem, but only time will tell if the PC keeps restarting even if I try to hold it down without using glue.
PC Components (If Needed):
PSU: Corsair SF600
GPU: MSI GTX 980ti
CPU: Intel Core i5-8400 @2.8Ghz
RAM: DDR4 RAM @ 2133 MHz
Motherboard: MSI Z370M GAMING PRO AC
I think the mobo header might be the issue. When those components don't stay fixed, it's really annoying. Heatglue works well, and case builders often use it. However, when the situation arises, I take action. I pick the 2-pin header on the mobo that’s causing trouble and gently press the two prongs together to create a bit of resistance for the cable when it connects. Of course, you should turn off power first, and possibly remove some parts. Be very careful with those pins—they’re thin and delicate. I use a very thin probe and only shift them slightly enough to keep the cable in place.
Begin by resetting your BIOS. Next, update the latest firmware for gaming MBs. The ticking sound indicates your PC is powering on. This suggests a power issue or motherboard problem. If your PSU functions on another system, disconnect all components and reconnect one by one while testing each step as though assembling a new PC.
Note: Any unusual restart should trigger a warning before startup. If no warning appears, it may point to Windows issues or a faulty motherboard.
Yeah, I managed to identify the issue with the motherboard. I pressed down the front panel connectors firmly so they wouldn't move, and the computer hasn't restarted since I shared this thread. If it keeps restarting, I'll attempt to reset the BIOS and install the latest firmware. For now, it seems to be functioning properly. I might try using a different power supply, but unfortunately it doesn't have enough wattage (including GPU).
Zebarjadi.raouf:
Initially, restart your BIOS and update the firmware. The gaming motherboard often receives updates.
Also, that beep sound indicates your PC is starting up. That suggests your system is operational. The problem likely lies with the power supply or the motherboard itself.
If the PSU works on another machine, disconnect everything and reconnect one by one while testing each time (as if assembling a PC from scratch).
NOTE: According to what I recall, any unusual restart should trigger a warning before booting up. If you're not seeing any warnings, it could mean your Windows is handling it or the motherboard has an issue.
Yes, I think the mobo header is the issue. When those components don't stay fixed, it's really annoying. Heatglue works well, and case builders often use it. However, when the problem shows up, I take the 2 pin header on the mobo that’s causing trouble. I gently press the two prongs together so there’s a bit of resistance for the cable when it connects. Of course, you should turn off power first, and possibly remove some parts. Be very careful with those pins—they’re thin and delicate. I use a very thin probe and only move the pins slightly to keep the cable secure.