How can I pass-lock my pc, without interupting the processes?

I operate several runescape software with my win7 personal computer.I would really like to own them about Brand-new Calendar year, nonetheless I’m afraid considering that it will have little young people about in addition to I defintely won’t be dwelling of which they will blunder with the bots.
Unfortunatly basically ‘lock’ my desktop additionally , it prevents that spiders.Perhaps there is how to fasten the item (with a new pass), without interupting this bot

Put a new password about the screensaver (set to smallest = A SINGLE minute) and ensure it really is collection to by no means hibernate or maybe sleep.

Pressing house windows key+L succeeds with luck.