Question Changed thermal paste and m.2 drive - can't boot or enter bios

[Vaulthobo]

Basically I opened up my PC in order to 1: add a new m.2 SSD and 2: change the thermal paste on the CPU. I removed my old m.2 and moved it to the m.2 connector that didn't have a heat spreader (this m.2 drive was black and I didn't want the new one, which was blue, to be visible) I then installed the new m.2 and also changed the thermal paste of the CPU. Now when I boot I simply get the message "press DEL or F2 to enter UEFI BIOS settings". I have tried two different keyboard plugged into every USB port imaginable and nothing at all happens, the same screen remains. Oh and I also can't boot, it's just stuck on this screen. I have also tried a CMOS reset to no avail.

 

[USAFRet]

Need details.
What specific make/model/size are the drives?
What specific make/model motherboard?

 

[Vaulthobo]

Need details.
What specific make/model/size are the drives?
What specific make/model motherboard?

The MOBO is an ASUS PRIME X570-pro and the old drive is a Samsung 960 Evo 256GB and the new drive is a WD BLUE SN550 1TB. keep in mind neither drive is the boot drive.

 

[USAFRet]

What is the boot drive?

 

[Vaulthobo]

What is the boot drive?

SATA Samsung 1tb SSD

 

[USAFRet]

OK.
I asked about the drives and motherboard because a LOT of boards will disable one or more SATA ports when an M.2 drive is used.
That does not seem to be the case with your component config.