PC problem (reboots)

[NoKeR]

A couple of days ago, when I started a game, my PC restarted (without a blue screen) and since then it has been impossible to start Windows with all the components connected. Sometimes it restarts before the BIOS screen and other times at the initial Windows loading screen, to the point where it gets stuck in a loop with constant restarts.

The only way I have managed to start the PC normally is with several components disconnected (secondary hard drive, DVD burner, graphics card, and several RAM modules removed). Right now I am only using one RAM module and the SSD

At first I thought it could be the fault of the disconnected components, but although less frequently, the restarts continue and are quite random. That is, the PC works fine for hours and then restarts immediately. I have even tried the PC without RAM and the restarts occur just the same.

I suspect it could be the power supply, but I don't have one to replace it. It could also be a problem with the motherboard

I rule out a temperature problem since I cleaned the computer not long ago, including the thermal paste on the micro.

I turn to the wisdom of the forum, to see if you can enlighten me.

Edit: The system is as follows: Intel i5 4690K \\ Asus Z97 Pro4 \\ G.Skill Ripjaws DDR3 1600MHZ CL7 16GB(4x4GB) \\ Crucial M550 256GB SSD SATA3 \\ Seagate Barracuda 1TB \\ Corsair RM650i 650W \\ Sapphire R9 290 Dual-X

Best regards

[Sylver]

Hello,

It can be anything, but try starting with all the RAM and from the integrated graphics. That is, remove the graphics card and everything else. Leave only the boot hard drive and the RAM, to narrow it down...

If you suspect the power supply, it would be interesting if you could borrow one or buy a cheap second-hand one to test. Starting with only what I mentioned should hardly consume energy.

Best regards

[krampak]

@noker I would also bet on the power supply, but if you don't have one to test it's a pain in the ass...

[NoKeR]

@sylver said in PC Problem (reboots):

Hello,

It could be anything, but try booting with all the RAM and integrated graphics. That is, remove the graphics card and everything else. Leave only the boot hard drive and RAM, to narrow it down...

If you suspect the power supply, it would be interesting if you could borrow one or buy a cheap second-hand one to test. Booting with only what I mentioned should barely consume energy.

Yes, it's the only way the PC works. As soon as I add even one more module of RAM, it crashes.

@krampak said in PC Problem (reboots):

@noker I would also bet on the power supply, but if you don't have one to test it's a pain...

It looks like it.

I'll add two videos that I think confirm it's the power supply:

In the first video you can hear an electronic noise, which hadn't appeared before and happens when I add any component to the PC from the "basic" ones. I should mention that shortly after this noise starts, the PC reboots.

In the second one you can see how the power supply turns off for no reason.

[Sylver]

@noker Well yes, it looks like either something is short, or something inside the source has crashed and when it's time to act it turns off when it detects the failure.

You can disassemble it and test it outside the computer to see if it continues to do strange things.
To do this, you just have to grab the main molex connector (24-pin that goes to the motherboard) and bridge the green wire of the same with any of the nearby blacks so that it turns on.

If it starts by itself without problems and does not turn off, you can try connecting things to it so that it consumes more energy, until it fails.

Regards

[_Neptunno_]

Well, I have the same opinion, it seems to be a problem with the power supply that is "somewhat damaged" and in the end, any extra consumption will cause the PC to shut down. I am leaning towards the power supply, perhaps because it "turns off" because I would even doubt if it is a problem with some module if it were some random reboot or blue screen.

I think you could connect the minimum and run some performance test to see if the computer suddenly reboots even with the minimum (as you said you managed to get the PC to start up). I would recommend this program: OCCT. You can see the voltages of the F.A and run some tests on the memory, etc. and see what happens.

Regards!!