So here the situtation when i turn on my computer, it boot up fine, everything is showing up properly but after a few hours into my computer like 2-3 hours of leaving it on It would freeze the screen and everything then eventually it would give me were something went wrong with your pc or something like that. I dont get enough time to read the error code because it instantly resets and when it does when booting up it shows no hard drive found. so im wondering what the issue i have yet to do any gaming yet this week and it was working fine my hard drive before i upgraded to windows 8 with windows 7 it was fine