My laptop is a toshiba satellite c660-1d7 with windows7 home premium. There was a virus on my laptop and my screen froze. Then the taskbar went and all my icons went with it. I opened task manager and went to processes and i accidentaly clicked on explrer. I then killed the file. After that it froze. I turned of the laptop and turned on again. It gave me two options 1 launch startup repair and 2 start windows normally. First i tried one which led me to a blank screen with a movable cursor and when i pressed to there was a flash of the user accaounts and it rebooted. I tried to press f8 to bring up the advanced tools and tried to click on the repair tool. It led me to a blank screen. What shall i do? Thanks in advance.