Sorry to be the sort of person to just jump on here with a question, but im having trouble with my television.
Why are you sorry that's exactly why these forums exist.
I'm no expert but you could try:
turn it all off- pull out the plug if you can't do it any other way.
Wait for thirty seconds.Put the plug back in.
is it on standby or do you need to press the on off switch?
If the switch does nothing try the remote.If the remote does nothing try replacing the batterie
If you can get it out of standby look on your remote for a menu button and check on the onscreen menu for settings and see if there's anything you can use to set the remote or the onn off switch- I wonder if there's some kind of sleep button that's turned your tv off.
Also is it connected to a digital box of any kind- if it is you'll need to check that that is switched on and taken off standby
also look on this website for a manual
How to watch Wimbledon 2015 live online: follow the tennis from your laptop or PC