Epson LQ 630S Reference Manual page 76

If USB Printer appears under Other devices, the USB printer
device driver is not installed correctly. If EPSON LQ-630
appears, the printer driver is not installed correctly.
If neither USB Printer nor EPSON LQ-630 appears under
Other devices, click Refresh or unplug the USB cable from
the printer, then plug it into the printer again.
4. Under Other devices, select USB Printer or EPSON LQ-630
and click Remove. Then, click OK.
5. When the following dialog box appears, click OK. Then click
OK again to close the System Properties dialog box.
6. Turn off the printer and restart your computer. Then, reinstall
the drivers from the beginning, following the instructions in
the Setup Sheet.
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Troubleshooting