Question No display after building new PC ?

[swanjade13]

I put together my new gaming pc and it won't display or turn on keyboard. It powers up, the fans turn on and I even tested the USB ports to see if it would charge my phone which it does. The red cpu light is also on but nothings wrong with the cpu. I've checked all the connections and nothings wrong with my monitor. I've taken out the cmos battery and put it back and still no change. The only part that's not new is the motherboard. Do I need a new motherboard?

 

[rgd1101]

full system spec? include brand and model of the psu

cpu light on could mean need a bios update

 

[swanjade13]

AMD Ryzen 7 5800X
MSI MAG B550M MORTAR
CORSAIR VENGEANCE LPX 2x16gb
MSI GEFORCE RTX 3060
CORSAIR CX-M SERIES CX650M
WD Blue 4tb HDD
NZXT H510

I know it needs a bios update but it won't display.

 

[DSzymborski]

AMD Ryzen 7 5800X
MSI MAG B550M MORTAR
CORSAIR VENGEANCE LPX 2x16gb
MSI GEFORCE RTX 3060
CORSAIR CX-M SERIES CX650M
WD Blue 4tb HDD
NZXT H510

I know it needs a bios update but it won't display.

It won't display without the BIOS update. You have to flash the BIOS; you can't do it after you get a display.

 

[Phillip Corcoran]

If your existing BIOS version doesn’t support the CPU there will be no signal to the monitor. You must update the BIOS first.