Officejet Pro L7500 printer suddenly won't print from PC. Power cord fell out of modem yesterday - replugged. Didn't try printing until today. Went through all troubleshooting programs I could find. Once it said a cord was out or broken. Checked all connections. Once it said driver needed updating - then said it didn't need.
I plugged and unplugged printer power cord and wall outlet per instructions. Printer and devices windows indicate the printer is ready to go. This seems to happen every 6 to 8 weeks. The last time the problem was the 'printer wasn't the PDF default printer.' Which the troubleshooter fixed. Roll Back Driver Greyed Out Windows 10 more.
No luck this time. It is marked as the default printer. Mac Touchpad Driver For Windows 10. The printer is a few years old & I don't know where the installation disk is. I don't want to un- then re-install, because software from HP might not be available anymore. (This happened to a camera I had; no disk, & no more manufacturer support - too old.) Something happens every few weeks - always something different. I'm running Windows 10. Now that I think about it, I didn't have this problem on 7, only since July '16 when 10 downloaded.