I am having problems with my computer. For some reason when I try to start it up it is asking me to select a bootable device like it isn't detecting my hard drive anymore. When I try to reinstall windows it says that I am unable to perform this. It is a 160gb sata hard drive and it shows that I have about 160gb free but won't let me do anything. Any ideas of what I can do? This just happened out of nowhere. Thanks for the help