weird keybord problem

[lIceColon]

so i use lptop with chiclet keybord. recently i brought it bck from the shop (after maintenance), nd hve been experiencing weird problem, specificlly the a key nd the 1 key doesn't wnt to work. sounds like simple keyboard problem, but the weird part is that sometimes I cn solve it simply by restarting the computer, and right now the a and 1 key seem to be working again, but its probably temporary. any idea on what is going on?