Knowing a printer's registry key is necessary if you're trying to remove a printer from your computer and it won't delete or if you want to make advanced manual configuration changes to a printer ...

When your computer doesn't see your printer, check for proper connections and substitute a new cable to rule out the old one as your trouble spot. Wireless Interference.

If you cannot print from software check your printer connections. Remove your printer and add it again to fix the problem. Try the following fixes to get the issue resolved.

If your printer doesn't have a scanner, you can use your computer's webcam to capture the document instead. Another option is to scan the document using your Android or iPhone , then transfer it ...