Computer not booting unless I reboot it

[SaveYourLifes]

Hi everyone,

Everything is in the title, when I power my computer on, I get no image or light from my keyboard or mouse, until I reboot it.

 

I recently upgraded a few things, new RAM, SSD, CPU, and motherboard. At that point I had not this issue, however I had another one, which led me to sending the CPU and MB back to the seller for diagnostic, after which he sent me back the MB ( no issue detected ) and a new CPU ( the last one was apparently defective).

And it was at that point that the booting issue started.

 

The manufacturer told me to try to use an other PSU or an other graphic card to see if that's where the issue was, but to be completely honest, between studies and the pandemic, I have no one near me to lend le one of those.

 

I also have an "issue", I don't really mind it, but after I turn the computer off, if I press a key on the keyboard, it lights back up ( the keyboard, not the computer). I had this issue long before I upgraded anything, I seem to remember reading it could be because of a problem with the PSU but I'm not sure.

 

My current configuration is :

MB : aorus B450 Elite

CPU: Ryzen 5 3600

RAM : 4x 8GB Crucial DDR4-3200Hz

Storage : 1x samsung 500GB 970 EVO Plus NVMe M.2 + 2TB HDD + 1TB HDD

Graphics : MSI 970 OC

PSU : LDLC ATX 500W 80+ Bronze

and one optical drive

 

[Guest]

Is the memory running XMP? Do you have the same issues at defaults?

[SaveYourLifes]

It wasn't running XMP, I've fixed that but the problem's still there