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Thanks Jim and Tony. Ok, the model is Acer Veriton.
No idea how to find out the amount of RAM, or the total hard disk size or the free hard disk space or the operating system version. I should have warned you I don't know the first thing about this. Tony wifi signal how do I know if it's up to strength? Does it not reboot when I switch it off at night? I have a car and I consider myself to be a good driver but I've never once opened the bonnet. :-).If it's too late for you to sort me out, please come back to me tomorrow if you can. x