Re: (A7) Me Downgrade - Request MeSpiLock Failed POST error

(1) try a bios recovery on your optiplex 3050.

How do I initiate BIOS Recovery on a Dell desktop or all-in-one computer?

1. Restart the computer.
2. Press and hold the CTRL + ESC key on the keyboard until the BIOS Recovery page appears.
3. On the BIOS Recovery screen, select Reset NVRAM (if available) and press the Enter key. Select Disabled and press the Enter key to save the current BIOS settings.
4. Select Recover BIOS and press the Enter key to start the recovery process.
   NOTE : Your Dell computer may restart a few times during the process of BIOS recovery.

The CTRL + ESC key combination can be used to trigger BIOS recovery on computers where an external keyboard is the primary input. This applies to Dell desktops, all-in-one computers, and laptops. 

(2) How to resolve the (A7) Me Downgrade - Request MeSpiLock Failed POST error on the Latitude 7275 Laptop | Dell India

note this resolution was for a Dell latitude laptop and may or may not help your desktop showing same error.  flashing bios is inherently risky.  do it only when there is absolute need.

Will this damage my files on my computer?

@NFleiszig 

(A7) Me Downgrade - Request MeSpiLock Failed

bios downgrades are not allowed

Ok Thanks

Re: Will this damage my files on my computer?

bios recovery or flash has risk of bricking motherboard but not erasing hard drive.