Question PC boots, no display, and keyboard+mouse don't turn on. It works momentarily after changing the PSU ?

[Neo_Arkanus]

Hello! My PC has been dealing with some boot issues lately and at this point I can't determine if the motherboard is fried, considering all the components are between 8-13 years old, with the exception of the GPU.

The computer turns on but shows no display and can't even get into bios. Also, fans spin but keyboard and mouse don't turn on. I know it's a classic problem, so I have tried the following:

• I try to boot using only 1 RAM module, testing 4 different modules and swapping slots.
• Disconnected all devices and hard drives.
• Reset CMOS + Replaced battery.
• Tightened every cable and checked for swollen capacitors on the motherboard.
• Replaced PSU.

After replacing the PSU, the system finally shows display and the keyboard + mouse work, but I have to reconfigure my BIOS again. My computer froze while I was exploring the BIOS, so I had to restart and do it again. I save changes and turn off the computer to connect the SSD where I have Windows installed.

The computer turns on... and back to the first point 😕. It shows no display, fans spin but keyboard and mouse don't turn on again. I doubt it's 2 faulty PSUs in a row, especially with the second one being brand new. Does it sound like I have to replace the motherboard?

These are my specs, just in case it helps:

-Motherboard: MSI 970 Gaming

- CPU: AMD FX-8350

-GPU: GTX 1050 Ti

-PSU: Corsair HX850w (11+ years old)

 

[CountMike]

Hello! My PC has been dealing with some boot issues lately and at this point I can't determine if the motherboard is fried, considering all the components are between 8-13 years old, in exception of the GPU.

The computer turns on but shows no display and can't even get into bios. Also, fans spin but keyboard and mouse don't turn on. I know it's a classic problem, so I have tried the following:

-I try to boot using only 1 RAM module, testing 4 different modules and swapping slots.

-Disconnected all devices and hard drives.

-Reset CMOS + Replaced battery.

-Tightened every cable and checked for swollen capacitors on the motherboard.

-Replaced PSU.

After replacing the PSU, the system finally shows display and the keyboard + mouse work, but I have to reconfigure my BIOS again. My computer froze while I was exploring the BIOS, so I had to restart and do it again. I save changes and turn off the computer to connect the SSD where I have Windows installed.

The computer turns on... and back to the first point 😕. It shows no display, fans spin but keyboard and mouse don't turn on again. I doubt it's 2 faulty PSUs in a row, especially with the second one being brand new. Does it sound like I have to replace the motherboard?

These are my specs, just in case it helps:

-Motherboard: MSI 970 Gaming

- CPU: AMD FX-8350

-GPU: GTX 1050 Ti

-PSU: Corsair HX850w (11+ years old)

In PC world, it's an ancient system so any part can be suspect particularly MB. You already did basic troubleshooting, further would be changing components one by one. MB is out of production for long time so you are down to equally old used or to pay too much for some that was somehow left in stock somewhere and still end up with PC that is at least 10 times slower than a minimal one of new generation.

 

[RAIDGoblin]

very unlikely to have all the RAM broken, very unlikely to have 2 faulty PSU's, if you unplug the SSD with the new PSU does it go back to booting to bios and freezing, or has it gone back to not posting at all since you plugged in the SSD

it does sound like a motherboard fault

 

[Neo_Arkanus]

very unlikely to have all the RAM broken, very unlikely to have 2 faulty PSU's, if you unplug the SSD with the new PSU does it go back to booting to bios and freezing, or has it gone back to not posting at all since you plugged in the SSD

it does sound like a motherboard fault

Yeah, the same happens when I unplug the SSD. The computer turns on, fans spin but shows no display and can't get into bios. Also, keyboard and mouse don't turn on.

 

[RAIDGoblin]

you can buy AM3 mobo's quite cheap, or a higher end one second hand, to test it, or just a new build since the hardware is quite old