ok so go on windows 7, and then what you need to do is press CTRL then AT THE SAME TIME press prtscr. you need to do it at the same time otherwise the screen shot wont work, then after that go on your computer and get "paint" up then on the left corner of "paint" click it and it will say "paste" then click that and there you go. but remember to save it if you want to. if you have anymore questions feel free to pm me! :] and my advice to you is DONT DOWNLOAD ANYTHING. because if you download something it could be something bad such as a Trojan,worm, etc. so and also if the print screen guide I just told you doesn't work, try going to your control panel of your computer and go on security,maybe something in your control panel isn't right so I'd check that.