You may try:
- Change the settings of the keyboard:
Open Control Panel
click on the Keyboard icon.
Adjust Repeat delay and Repeat rate by moving the slider.
- Change the USB port and recheck the issue.
- Update Keyboard driver.
- Boot your computer in safe mode and check if the keyboard responds normally. If it does, the issue may be related to third-party software.
- If possible, try using a different keyboard to see if the issue persists.
If possible, try using a different keyboard to see if the issue persists.