Hi,
Parallel and Serial ports are not supported in Windows 8 or Windows 8.1. A USB converter or optional network accessory is needed.
Let's analyze and identify the cause of the issue. Perform the steps provided and check.
Method 1: Run the Hardware and Device Troubleshooter and check if it helps.
a. Press “Windows key + F”
b. Type Hardware and device then click on Settings
c. Click “Find and fix problems with the device”
d. Click Next and follow the instructions.
Method 2:
Step 1: Completely uninstall the parallel port drivers from the computer and then try installing the printer drivers and check. Follow these steps:
a. Press Windows key + R
b. In run window type “devmgmt.msc” and press Enter
c. Locate the parallel from device manger
d. Right click on it and select uninstall
e. Reinstall the latest printer drivers and check if it helps
Step 2: Run the pager programming applications in “Compatibility mode”
Make older programs compatible with this version of Windows
http://windows.microsoft.com/en-US/windows-8/older-programs-compatible-version-windows
Hope this information helps. Reply with the status so that we could help you further.