Hii All

I have a problem with Dell Active Pen (Stylus) not working

i have a user which use Dell Latitude 7275 with Dell Active Pen, I don't know, somehow the Active Pen is not working, i tried to other user it's still same, then i try another active pen from other user, first it's working but another it's cannot be use again. so i have 2  damage dell active pen, 

i want to know, is about the pen or the latitude?