Hi, I have an Asus windows 7 laptop. About 2 weeks ago, when i shut down my computer, it asked me for an update, while it was updating, i put it in my sleeve thinking it would turn off in a few seconds (i found out after how this is bad) while i opened it up it asked to do a launch startup repair, this didnt work, i went over to best buy and they told me it was a software problem, and that everything would need to be wiped and to wipe it he told me to press f9 when i turn it on, i did that and now my desktop comes up but without all that google chrome and internet explorer stuff, and there is a window that comes up that is just black and nothing else (i was told this is the command prompt). If anyone knows how to fix this please help me. Thank you.