Hi,
When we continuously press the Shift key 5 times the computer will a bleep sound and pop up will come up asking if you want to turn on sticky keys.
To turn off the dialog box and thus relieve the annoyance,
- Click Start → type Ease of Access → Make the keyboard easier to use.
- Locate the “Make it easier to type” heading.
- Remove the check mark from the box next to “Turn on Sticky Keys”.
Note: Sticky Keys is an accessibility feature to help a computer user who has physical disabilities. It essentially serialized keystrokes instead of having to press multiple keys at the same time which makes pressing combinations of keys a lot easier because the keys remain active until any other key is pressed.
Hope this helps