What should I do if the keyboard cannot be used normally after the win7 computer is turned on? Some users have encountered a situation where the keyboard cannot be used after the computer is turned on normally. In the last use, the keyboard could be used normally. There are many reasons for encountering this situation, and we can use different methods to troubleshoot the problem. Many friends don’t know how to operate in detail. The editor below has sorted out the solutions to the problem that the keyboard cannot be used normally after the win7 computer is turned on. If you are interested, follow the editor to take a look below!
2. Check whether the USB interface connected to the keyboard is in poor contact.
3. If there is no problem, then open the computer control panel, find the keyboard option under Accessibility.
4. Find the Use filter key under the keyboard, uncheck the previous checkbox and click OK.
It may be the following problems:
1. The USB keyboard and mouse may not be enabled in the BIOS settings, but the keyboard and mouse are USB interfaces. Unplug the USB keyboard first. 
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