Not the most elegant solution, but the plop boot manager should let you do this. I've tested this extensively in a VM, and have had no issues, but considering the age of anything with win2k, I'd probably proceed with caution.
You will need the Plop boot manager - I used 5.0.14 and an unzipping tool to extract the archive - I used 7zip
Unzip, run "InstallToBootLoader" (you can also use install to mbr but thats messier) script, and agree.
Reboot, and select plop boot manager entry.
Gaze at the trippy boot screen then select floppy - I'm using a win2000 boot floppy, but you obviously have something else in mind. Do what you need to do.
Once you're done, remove the entry for plop from boot.ini - this should be in the root of c:, using notepad, and delete the plop folder, if you want to remove plop. Otherwise, leave it alone for the next time you need to boot a cd, usb or floppy
...not to mention that w2k is a 14-year old OS that reached EOL nearly 4 years ago. – EEAA – 2013-10-01T11:24:43.623
Question is related to windows 2000. Inside cash register is normal computer parts (standard motherboard, ram, cpu etc.). And with standard windows 2000 setup. Just case is sealed and i cannot reset bios with jumper. – Guntis – 2013-10-01T11:39:51.380