Question No Signal on monitor randomly

[aisowa]

I have this build for over 3 years now. Recently I started to get No Signal on my monitor randomly. At the beginning, it was rare. But it became more often and now it is under three minutes after boot up. Last time I used my pc over an hour was yesterday night, which was approximately 2 hours until it gone black screen again. Before that, I reset the nvidia 3d settings to default, and I thought it was the problem but it seems it was not. Pc acts all random. Sometimes it doesn't show any signal on monitor with ez debug VGA light on the motherboard being on, sometimes it boots up and gets signal but it goes again randomly with fan speeds same, and sometimes it boots up shows signal loses signal and fans go crazy. Here is the list of things I tried and didn't work.

- I updated bios to the latest non-beta version.
- I reset cmos
- I updated gpu drivers to the latest version.
- I bought a whole new PSU.
- I activated XMP profile on bios and increased the frequency to the motherboard maximum.
- When my pc was on last night, I downloaded a stress test program and run a stress test on GPU. It ran 25 minutes on full load without losing signal. Max temperature was 70 degrees.
- I ran CPU load test for 5 minutes. Monitor didn't lose signal. Max temperature was 80 degrees.
- I reseated the GPU multiple times, and I cleaned pins with a soft eraser.
- I tried to boot with single ram stick, same results.
- I removed all the parts from the computer case and built the computer outside, on the motherboard box to prevent if something in the computer case causes short circuit.
- I made sure that every power cable is seated well.

At this point I am out of ideas. My pc specs are these:

GPU: MSI Nvidia GeForce GTX 1660 SUPER VENTUS XS OC 6GB GDDR6 192bit
CPU: Intel Core i5 9400F
CPU Cooler: Stock Fan
Motherboard: MSI B365M PRO-VH
RAM: 2x Corsair 8GB Vengeance LPX DDR4 2666 MHz
SSD: Kingston 500 GB A2000 Series NVMe M.2 SSD
Old PSU: Corsair VS550 550W
New PSU: Cooler Master ELITE NEX W600 600W

While I write this, I opened the pc again and run League of Legends practice tool game before it lose signal again. This time, instead of losing the signal, monitor turned to blank light-blue screen. Nothing was written on it. I closed and opened the pc again and the same no signal issue happened after some time.

I installed HWinfo yesterday when the pc was on, and I was able to catch a no signal issue when it was logging. I don't know how can I add the file, but I can add if you need it.

Before the problem occured, I installed a new sata ssd. I don't know if I did anything wrong that might cause this, but removing it didn't solve the problem.

Also, hardware monitor programs shows my SSD's remaining life at %34 . I thought if the problem was the SSD, system would crash completely instead of just losing signal.

I wait for your suggestions and help. Thank you in advance.

Edit: Wrote the wrong RAM specs

 

[Lutfij]

Welcome to the forums, newcomer!

I updated bios to the latest non-beta version.
I would update the BIOS to the latest version.

I updated gpu drivers to the latest version.
Did you use DDU for this step?

Not that the PSU you got later was any better but I'd have looked into something that was higher in quality. Perhaps source a reliably built 550W unit and try powering up the system. As for your GPU probably being the culprit, maybe drop in another discrete GPU into the system and see if the issue crops up.

 

[aisowa]

Welcome to the forums, newcomer!

I updated bios to the latest non-beta version.
I would update the BIOS to the latest version.

I updated gpu drivers to the latest version.
Did you use DDU for this step?

Not that the PSU you got later was any better but I'd have looked into something that was higher in quality. Perhaps source a reliably built 550W unit and try powering up the system. As for your GPU probably being the culprit, maybe drop in another discrete GPU into the system and see if the issue crops up.

I don't want to update BIOS again, since pc can crush mid-update and completely mess the system. It was stressful enough first time.

I did not use DDU.

I don't think GPU is the problem, but I will try to replace it to be sure if I can get my hands on one.

It is a fresh, out of the box PSU. I think it would at least work fine for a while, but issue was still there even in the first boot.

 

[aisowa]

I wrote the RAM specs wrong. It is edited and corrected now.

 

[Sam….]

I have this exact same issue. I replaced my 600 watt psu with the exact same 650 watt psu and it started happening.