On my laptop today and a piece of software - something like a spyware remover tool, popped up on my desktop saying it had run a scan and I had 33 intruders (trojan horses, malware etc) which needed to be removed. I thought it was strange as I did not recognise it as something I had downloaded. I closed the window and a pop up message kept appearing in the bottom right hand corner saying you must register to remove dangerous intruders (I can't remember the exact message). Two strange icons appeared on my desktop which I deleted and then had to go out so I closed the lid and the laptop went in to hibernation. When I returned I got the first screen where it says F2 to setup or F12 to boot menu but then a blank screen?????Can anyone advise me? I had only changed my anti virus software from Kaspersky to AVG as I couldn't afford to renew it. I also have recently added photos which I haven't backed up, I hope I haven't lost them.................?? Note: I have changed subject to more appropriate description for move to Windows OS.