After a recent power failure at my home, I tried to turn back on my computer and I get hanged at the windows 7 logo. I tried to restart multiple times but it don't work. So I to to do safe mode but it don't work either. It gets stuck when it loading to drivers. So I tried to put in the windows 7 installation disk to try and reformat my hard drive, but even that gets hanged at the logo screen when it tries to boot up. Please help me if you can I don't know what to do. Thanks.