keyboard is malfunctioning

[AronRaynott]

keyboard of laptop is malfunctioning. sometimes they work sometimes don't. to solve this problem i have bought an USB keyboard. initially it was ok, but recently it has also started giving the same trouble. i could not figure out what's going on. help me out...please..

 

[Seankay]

Here're a few things that can help you: http://www.pcmag.com/article2/0,2817,2424402,00.asp
Let me know if these doesn't solve your issue!