Thanks for the responses Marc and svhs. I now have the monitor, keyboard, mouse and wireless receiver connected up to another PC and yes you've guessed it and they all work perfectly. The monitor switches on and the normal start up procedure takes place, so there is definitely something wrong with the t865 as it keeps giving the No Input Signal. It also seems the t865 throws a wobbler if you connect another monitor to it. I got a blue screen with lots of white writing and it told me to restart the computer again, I did and hey presto everything started alright. I wish someone could figure out what is going on here.

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All done without the aid of a safety net...