Posted 29 May 2013 - 01:15 PM
If you pulled off the key, and there is nothing stuck under it, sometimes you can just use your finger to tap where the key goes. If the A types on the screen then its that the key is not on correctly. If it does not type A on the screen then you have a faulty keyboard on the laptop.
As stated before, it can be a little tricky for the novice to change out a keyboard but it can be done. If you know how to remove yours, under the keyboard will be a part number which you can use to search online to see if you can find a replacement.
Dell Precision T7810, Win10 64bit fully updated, Symantec Endpoint Protection,
Watchguard Firewall, Intel Xeon E5-2620v4 CPUs, Dual 8 Core Processors, 32GB Ram,
E5-2620v4 @ 2.10GHz X 2, AMD FirePro W4100 with 4 Screens, 500GB SSD Boot Drive,
Raid-1 Dual 2TB Sata 10000 rpm Hard Drives, DVD Burner, IE11, Opera, MBAM, MBSB, MBAE