Few days ago I started to notice that some of the letters on my laptop keyboard randomly stop working. Sometimes they work and sometimes they won't work at all. These are the keys that stop responding: A,X,C,F,N. Basically I boot my OS and then whenever I try to press on one of those letters they don't respond. Another thing to mention, if I hold the letter for about 5-15 seconds it starts working again. At first this wasn't a big problem, but then it just got worse. This started to happen more frequently. Any help is appreciated.
My laptop: Packard Bell Easynote TS11HR