26 Apr How to Clear the Print Queue (Windows 7)
Click on the Start Button in the bottom left-hand corner. Click on Devices and Printers.
Next, double-click on POS-X Thermal Printer.
In the Printer queue, click on Printer in the top corner.
Once the Printer Queue clears, close the Printer Queue. Right-click on the POS-X Thermal Printer device.
Left-click Printer Properties. Then click on Print Test Page to test the printer.