A client has an HP OfficeJet 6400 installed via network cabling and a static IP address. She called me today complaining that she couldn't get any documents to print.
So I check the printer options in the control panel and find three or so documents "stuck" there (I tried deleting them and they didn't go away). So I open the explorer to \windows\system32\spooler\PRINTERS and try to delete the files in there, but I get an "accessed denied" message. Reboot into safe mode, delete the files, and return to Windows, but still cannot print (same symptoms).
I delete the printer and reinstall it and afterwards everything seems to be working fine.
So here are my questions, since I never understood why it works that way:
How does the spooler get jammed?
How do drivers get corrupted (if that's what occurred)?