Not sure why/how I ended up at "canon d530". Apologies.
Found the following link:
https://support.usa.canon.com/kb/in...105357&cat=9996A001&actp=LIST&showDraft=false
Old: Published just over 7 years ago and updated about 2 1/2 years ago.
It may well be that some scanner button combination reconfigured the language. Hopefully there would be or will be some applicable documentation to be found.
As a long shot: Contact Canon and simply ask how to change the scanner's language setting. Include all of scanner details via any plates or other labeling.
[Note: While looking at the scanner: is there any small reset button or perhaps a small hole labeled "reset". Just look for now. Do not "reset" because that could lose more functionality. ]
Also include the software name, version, etc..
Being that the OS is XP and the hosting laptop being a Dell it is very likely that Canon (if they even respond at all) will simply blame "the other guys".
Or, if lucky, they could send a link to the appropriate User Guide/Manual.