It sounds like you are experiencing a keyboard issue on your Windows 7 system where the backspace key is not functioning properly unless you hold down the Shift button simultaneously. Since you've tested the keyboard on a different PC without any issues and also tried a different keyboard on your Windows 7 PC with the same problem, it seems like the problem might be related to your Windows 7 system settings or drivers. Here are some steps you can take to troubleshoot and potentially resolve the backspace key issue: 1. Check Keyboard Settings: - Go to "Control Panel" > "Hardware and Sound" > "Devices and Printers". - Right-click on your keyboard and select "Keyboard Settings". Check if there are any settings related to the...