[SOLVED] PC screen turns black and restarts again and again. Can anyone please help me identify the source of this problem?

[Mash20]

This is going to be a long, detailed post. Please read till the end.


I bought the PC 8 months ago. There was no problem until I found that black screen and restart problem 30-45 days ago. I first found the problem while playing Far Cry 3. When I 'quick-traveled' (going to another region of the game map quickly) or when a mission was about to load or show a video cutscene, PC screen used to turn black at that exact moment of loading and then restart. Sometimes the problem showed up, sometimes didn't. But PC never showed that problem when I was roaming around and was inside a mission. I thought it was a game problem. I uninstalled the game.


But after some days, I started to find that exact same problem while doing everything else: while browsing the Internet & the folders of my PC, while watching a video,.....and even when the PC was idle. Sometimes I can use the PC for 2 minutes, sometimes 5, sometimes 10 before it shows the problem. Also, sometimes when it starts to restart, it doesn't even come to the boot state. It turns black before it can get to the boot and tries to restart again. Sometimes the last loop goes on forever.


Here are a few things I have noticed when the screen turns black:
• Casing & CPU fans keep rotating the same way. There was no stop at all.
• RGB lights of casing fan and casing are always lit.
• The monitor shows 'Analog ... Power Saving Mode'. So, the monitor stops getting HDMI output. After around 2 seconds the monitor starts to get HDMI output.
• During the screen is Black, the CPU's EZ Debug LED is on. If the PC can get to the boot, CPU Debug LED light turns off, Boot Debug LED turns on for a second, and then the VGA Debug LED turns on for a second. And if the PC doesn't even get to the boot, CPU Debug LED keeps turned on.


Here are a few things I have tried:
• Reinstall Windows
• Turn off XMP
• Clean the dust (But I don't know how to disassemble the CPU fan. So, there might be some dust on the CPU)
• Reseat the RAM stick, GPU & all the cables (except CPU)
• Change the RAM slot
• Reset BIOS
• Gently rub the gold coloured edge of Ram using an eraser


Specifications:
• Processor: AMD Ryzen 5 3500X
• Main Board: MSI B450M PRO-VDH MAX
• RAM: 1 stick of Corsair Vengeance LPX 8GB DDR4 3200MHz
• SSD: Transcend 110S 128GB M.2
• HDD: Western Digital 1TB 3.5 Inch SATA 7200RPM
• GPU: Gigabyte GeForce GTX 1650 Super Windforce OC
• PSU: Gigabyte GP-P450B 450W Non Modular 80 Plus Bronze certified


Temperature & Usage Data (while PC was idle) (using MSI Afterburner):
• GPU Temperature, °C: Min-36, Max-40
• GPU Usage, %: Min-0, Max-26
• CPU 1 Temperature, °C: Min-40, Max-65
• CPU 2 Temperature, °C: Min-40, Max-65
• CPU 3 Temperature, °C: Min-40, Max-65
• CPU 4 Temperature, °C: Min-40, Max-65
• CPU 5 Temperature, °C: Min-40, Max-65
• CPU 6 Temperature, °C: Min-40, Max-65
• CPU Temperature, °C: Min-40, Max-65
• CPU 1 Usage, %: Min-0, Max-49
• CPU 2 Usage, %: Min-0, Max-76
• CPU 3 Usage, %: Min-0, Max-78
• CPU 4 Usage, %: Min-0, Max-38
• CPU 5 Usage, %: Min-0, Max-38
• CPU 6 Usage, %: Min-0, Max-94
• CPU Usage, %: Min-0, Max-52

The above data is collected from Windows startup to the time when PC screen turned black. But I think there wasn't any unusual, huge spike in those graphs right before PC screen turned black.

ReplyForward

 

[rgd1101]

replace the psu

 

[Koekieezz]

Could you do a windows boot now?

 

[dorsai]

The PSU you have is a cheaply made low quality one. I'm with rgd1101 in saying you should start with buying a quality PSU.

 

[Mash20]

replace the psu

Yes. I'll try to get one soon. Thanks for your response.

 

[Mash20]

Could you do a windows boot now?

Yeah when I first start the PC, windows can load. But after the problem shows up once, the PC usually can't even get to the boot. It tries to restart again and again.

 

[Mash20]

The PSU you have is a cheaply made low quality one. I'm with rgd1101 in saying you should start with buying a quality PSU.

Thanks for your response. I'll try to get something like Corsair or something next time.