Roopal,
This question has too much parameters. In order to help you out, I need to know more information. For example:
1) Is this a new issue? Has your keyboard worked fine before?
2) Is you keyboard hanging up when you run a specific application? Does it hang up at boot up?
3) What operating system are you running?
Regards,
Claudia Lorente
Applications Engineer
National Instruments
http://www.ni.com/ask
