I have formatted my 750gb WD black 2.5 inch hard drive several times, each to NTFS. Every time I install some sort of game (I've only tested through games on steam) it stops halfway. The next time I start my computer, its says its not initialized in Disk Management. When I go to initialize, it says "The request cannot be performed due to an I/O error." I change SATA ports and it continues to work again only AFTER I reformat it. And then the process repeats. How can I solve this problem? Thanks for all the help