I need help with installing Windows 8.1 to my pc. I've gotten to the part of the installation in which i pick custom or express install. Whenever i choose custom, the screen in which i pick the hard drive i want to install windows to is blank. As in it cant find my hard drive. I've tried reformatting it through command prompt, but it did nothing. I cant think of any other way to try to get my PC to install windows to the hard drive. Please help. I hope I wasn't too vague, I tried explaining it the best I could.