Bios Setup screen always opens on Startup

I'm having a few problems which may be linked, can anyone help me sort them out?

First, recently, everytime I start my Inspiron 8200 the Bios setup screen immediately opens. the F2 key does not appear to be stuck, and I have to press Esc to continue with the windows startup.

Second, when a directory is opened, immediately the first file in the directory is highlighted and the cursor is flashing ready to rename the file. Agian I have to escape to get out of this. sometime this continues everytime I open a directory and then after a while it behaves normally.

I have tried using a different mouse and have cleaned the keyboard as both problems appear connected to the F2 key properties.

Any ideas?

Ananse