Failed Parallel Port on system, Recommended Easiest Upgrade Solution ?

BIOS password and sudo\root password are unrelated.

The sudo password will be the password of the user you are logged in as.

Just to make sure, the ISO file just hasnt been copied to the USB stick ?
What size USB stick are you using ? I've seen some older machines that have trouble with larger modern USB sticks. I'd try and dig up a 2gb or 4gb USB stick, just in case.
Also some BIOSes, older ones again, have a selection where the USB stick can be selected as a CD-ROM, HDD or floppy drive, if this is the case you may have to play around with this.

Also it would be helpful if you could identify the computer, this info should be available in the BIOS. Some machines\motherboards have quirks that can increase the difficulty level to get simple tasks done. The more info the better we can help.

I used RUFUS to create the ISO , its an older 2Gb stick. The motherboard is an Intel D510 , Intel Atom 1.66ghz , 64bit.

To tell the truth I'm not a big fan of Rufus, it tries to be too smart by far.
When I had to create bootable USB stick via windows I always used win32diskimager.org/

Or if using Linux does the job fine, askubuntu.com/questions/1333102/what-is-...-hard-drive-over-usb