... can anyone give some help on how please?
Before you do anything inside a PC you should try to avoid static problems. Plug your PC into a mains socket, but leave that socket
switched off at the wall (this gets your PC earthed, whilst avoiding electrocuting yourself!).
Ideally you can get hold of an earthing strap which connects to your wrist and to the PC with a crocodile clip so that you are earthed too. If not, then grab hold of the metal case before you start working, sit reasonably still (to avoid generating excess static as you work) and hope for the best!
Open the case and locate the back of the floppy drive.
There will be a power connector (small with black and red wires) and a data connector (larger with a flat ribbon cable, usually grey or cream coloured) going in to the back of the floppy drive.
Detatch both connectors. They can be left inside the PC but best to attach them to similar cables using tie clips, to stop them flapping around and finding their way into fans etc!
Remove the screws holding the drive itself into the bay; these will be on the left and right sides. Probably only one screw but maybe two on each side.
The floppy drive will slide out of the bay, either forwards or backwards depending on the design of your case.
RC