I could see when I came home tonight that there were no more suggestions as to how to cure my ‘menu’ problem so realising there must be an answer I began to search the net for one. I came across one guy who said that he once had the same problem and he resolved it by noticing that in Device Manger he had multiple entries under ‘Mouse’ so he deleted them all, rebooted, and everything was fine.
When I checked my Device Manager I found I had only one entry under ‘Mouse’ but I had multiple entries under ‘Human Interface Devices so I tried deleting them all. The problem was that I was deleting the mouse and keyboard yet still leaving entries I had no way of deleting. Anyway, after realising the ones I could delete first, I managed to make the final deletion the mouse. Obviously now I had no input so I just shut off the power (not very wise I know but I was desperate to track down the problem). I then put in a PS2 keyboard instead of the Trust USB keyboard, booted up and everything was fine. Problem resolved.
This was when it dawned on me. About 10 days after the clean re-install I had replaced my old USB keyboard (which was getting to look rather grubby) with this Trust one. It must have been then when the trouble started.
Just for the sake of it tonight, I shut down the computer and replaced the PS2 keyboard with the USB one. Here is where something strange happened.
When I first booted up I could use both the mouse and the USB keyboard. I could also access the menus. I thought OK - I have cracked it. Then, after about 30 seconds, I had a balloon come up saying the computer had found new hardware and was installing it. Another balloon said OK it was installed. You have guessed it. I was back to square one again. I could not access the menus.
Needless to say I have ditched the USB keyboard and am using the PS2 one and everything is fine.
I did try the keyboard in all the other ports but it was still the same problem. I have also tried the mouse in all the ports and it works OK. Where the problem is exactly I have no idea. It could be the USB keyboard itself I suppose or compatibility or conflict of resources. Perhaps I shall never know.
Anyway, thank you both Manshu and DAVEINCAPS. I appreciated your efforts. I hope this little bit of info may be of help to someone else in the future.
message edited by terry_sda