Hey There, I am Sofia Carter. The following factors can contribute to HP Printer Driver Is Unavailable. If any driver installation on your computer was left unfinished, the printer driver can become corrupted or out-of-date. Another potential source of this problem is when the spooler service fails, the software crashes. On the other hand, the printer's functionality is affected if your system is using an outdated driver that hasn't been updated in a while. Due to frequent system conflicts, the printer driver eventually becomes incompatible.