Coombs' test involves taking a blood sample which is checked for the presence of antibodies which may destroy red blood cells.
You can use the HP Print and Scan Doctor to test the status of the printer spooler, print queue, device manager, and device conflicts. 1  On the desktop, double-click the HP Print and Scan Doctor icon to open the tool. 2  Click Start on the Welcome screen. 3  Select your printer, and then click Next.  Click Fix Printing.
But the scanner still won't work. For the record, the No Scan Options error message is appearing on the printer itself, not the PC. That's the problem I want to fix. Also, I've been Adding a Device through the HP Installer, not the Devices and Printers panel. can print wirelessly from my PC to the printer, but when I try to scan documents it says No Scan Options. Refer to device documentation to troubleshoot. Press OK.. I've tried troubleshooting but nothing seems to work.