I need to install the driver but my computer system can't find the star nx 500 printer model.

According to your description, please try the following operations:

1, check whether the printer has been properly connected to the computer? And check the BIOS CMOS, for the LPT interface open and resource allocation?

2, into the system, in the start - Run - enter dir >lpt1, see if the printer responds, if you are sure to be connected to the LPT printer interface, if there is no response, it is sure that the interface or the motherboard and the settings of the problem.

3, check whether the printer driver is normally installed, and prompted to install successfully? Check in the printer properties, is there this device?

4, printer services and related services are turned on?

5. Is the system genuine? Is it streamlined or optimized so that the printer can not be installed and printed? Replace the genuine or pure version of the system and try again.

What progress you can ask or add, I hope to help you.