Hi there.
If there is a PC in this cabinet (which it appears to be from that black screen message), you need to gain access to the PC.
If there are usb ports on the PC, plug a keyboard in. If it has the older PS2 plug (round), you may have to use a PS2 keyboard.
After you plug the keyboard in, reboot the PC, when that black screen comes up, hit F10. This will take you to the bios setup screens.
Set date and time and save.
This will probably fix your problem.
I have found that if a PC is not plugged into a power source for quite some time, the CMOS back up battery will go dead. This battery keeps the BIOS information saved, if it goes dead the BIOS will revert back to
basic configuration and that message screen will pop up on reboot.
If it pops up again after you go through the F10 settings, you will have to replace that battery.
Some computers have rechargeable CMOS batteries, so the battery will be recharged after PC is on for a few hours.