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.
I have recently bought a new HP computer. I was able to scan to computer on Windows 8, which was very helpful for my school paperwork. However, since updating to Windows 10, I have been unable to scan to computer. My HP printer/scanner says configure your scan settings on your computer and try again.. I ran a diagnostic test on my computer for my printer, but it didn't detect any problems.