If the scanner does not recognize the computer, there are a few steps that you can take to try to resolve the issue.
1. Check the Connections: Start by checking all the physical connections between the scanner and the computer. Ensure that all cables are securely connected and that there are no loose cables. Also check to make sure both devices are powered on.
2. Install Drivers: There may be a problem with the drivers installed on your computer. Most scanners come with installation CD’s or DVD’s which contains the drivers for the device. Uninstall the current drivers for the scanner and reinstall them from the CD or DVD.
3. Troubleshoot Hardware Issues: If the above steps do not work, there may be a problem with the hardware itself. Try connecting the scanner to another computer and see if it gets recognized. If it does then the problem is likely with the original computer.
4. Reset USB Ports: If the scanner still does not get recognized then the issue could be with the USB ports on the computer. Unplug the scanner from the computer and then reset the USB ports. To reset the ports, first disconnect all external USB devices from the computer. Then shut down the computer and unplug the power cable. Wait a few minutes, plug the power cable back in, and turn on the computer. Then connect the scanner to the computer and see if it gets recognized.
5. Check Windows Updates: It is also possible that the problem is caused by an outdated version of Windows. Check to see if there are any available updates for Windows and install them. This should fix the issue if the problem was caused by an outdated version of Windows.
6. Reinstall Windows: If all else fails, then the only remaining option is to reinstall Windows. Reinstalling Windows will get rid of any old files and settings that may be causing conflicts. It may also be necessary to reinstall any other software that was installed on the system.