Yes. Ditto for Caps Lock and Scroll Lock.
If the power LED is green and the memory LED is not red and Num Lock works, then the mobo should be okay. It might be an external problem, such as the monitor being set to the wrong input.
You said the BIOS got reset. Read the user manual and look for default settings. A mobo that old might default to VGA and not use HDMI unless manually selected in the BIOS menu.
The default BIOS settings of that era had a lot of bad defaults necessary for backwards compatibility. For example, this particular board defaults to “native IDE” instead of AHCI, which absolutely wrecks HDD speed.