Its my bosses computer at work.. im usually their go to guy when it comes to computer problems, but this one has me totally lost as to where to look. excuse me if im noob. but when we try to boot up her system, it loads rather quickly straight to the bios loading page, where it says the retailers name etc. then proceeds directly to the "f5" screen where it asks you what mode you would like to boot in. ive tried safe mode, normally, last known working configs, but it just keeps returning to this screen. i turn on, bios loads, goes to "f5" screen, i choose one, and it goes back to that screen. now im lost in this circle. im going to make sure all the hardware is plugged in properly, and getting power. but if this isnt the problem is it a hard drive gone bad? opinions please, i could use help on this one! thanks alot guys!