I have an acer travelmate2480 laptop. Some functions of my keyboard are not working.
1. Letters a,e,r, and v are not working.
2. Numbers 1 and 3 are not working.
3. Cap lock and shift keys are not working.

Kindly help me to solve this problem. I know there is a solution with somebody.

Get a new keyboard as it sounds terminal.
They are relatively cheap and easy to install.