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Question

After dwngrading Win 10 to win 7, computer now hangs in post

Mar 14, 2016 8:25AM PDT

A couple nights ago, while I was asleep, Windows 10 decided it was going to download itself, so I awoke to a new OS much to my delight. I find this very odd to have happened, since I sure as hell didn't download/schedule to download it myself (I am extra careful in making sure I don't download it by accident.). But with how damn pushy MS is being with it, I'm hardly surprised, but I digress...
After trying it out for the day, I decided I really didn't like it much, and used the in-OS option to revert back to Windows 7. It started doing it's thing, and having planned to let it go overnight, I went to sleep. When I awoke in the morning, my computer was stuck at the post.
Since then, every time I boot it up, it gets stuck there. Only about 1/10 times I try am I able to get into the BIOS. Keyboard boots up fine, and I'm sure that the keystrokes are being registered, but most of the time I get no response)so I have messed with some things in there, and found a bit of a workaround (by boot overriding directly to the drive with windows on it/ cd drive.)

Over the course of the last couple days I have tried nearly everything I can think of. I have changed around/reverted to default BIOS settings, reset CMOS, repaired the MBR through the Win 7 installation cd, have tried fixing/fully reinstalling both Win 7 and Win 10, used an external program to delete useless registry entries (I'm not quite savvy enough to do it manually). Possibly some things that I'm forgetting, but nothing has worked to solve the problem.
I'm quickly running out of things I am willing to try at my current knowledge level. I built my computer, and it is only about 6 months old or so. I have never had any performance issues with it whatsoever, and after overriding the boot in the BIOS everything works perfectly fine, so I'm thinking it's not a hardware problem? Mobo is an asus crosshair v formula z, cpu is AMD FX-8350 Black Edition.
Thanks for any help!

Discussion is locked

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Clarification Request
Have you checked the hard drive?
Mar 14, 2016 10:35AM PDT

Checked to see how much room is on it? If the drive is almost full when this started, it's possible you've used up all the room now and that's what is causing it to hang up.

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Answer
Give up, that's what I did
Mar 14, 2016 8:32AM PDT
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Answer
Wait, it hangs on a fresh install?
Mar 14, 2016 10:04AM PDT

That tells me it's some hardware issue. Get estimates.

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Answer
Problem Solved
Mar 15, 2016 12:27PM PDT

My BIOS was recognizing one of my USB devices as a BIOS update. Thanks for the help.