Windows 8 shut down and BIOS problem

I'm having a really weird problem, I searched everywhere on the internet but couldn't find a solution, neither I could find someone having the same problem.

I just upgraded my old Windows 7 to the new Windows 8. Everything was fine at the beginning but after some time my computer started freezing after the windows login screen.
I log in and after a few seconds my mouse freezes and then the OS simply shuts down, but the computer is still turned on as if nothing had happened. The monitor's led blinks and there's no image on screen, just like it does when it's turned on and the computer is turned off.
The most odd thing is that when I restart my computer, the onboard ethernet won't work or the processor won't start, and I have to reset the motherboard BIOS for the motherboard to work fine again.
This problem appears as I use the computer and doesn't seem to be caused by any specific software. For a moment I thought my motherboard was dying but reinstalling the Windows 8 (of course it appears again and again). Using the system restoring doesn't fix it. The only fix I found was returning to the Windows 7.

I have already tried:
-Update the OS.
-Disable windows update.
-Disable windows fast startup.
-Update the graphics card's driver.
-Update the motherboard BIOS.
-Creating a restoring point as soon as the Windows 8 was installed and restoring the system to that point (oddly, the problem persisted).
-Checked if there was a HDD firmware update (there wasn't).
-Checked if there was a monitor firmware update (already was up to date).

I really want to use the new OS as I could notice a little performance boost compared to the Windows 7, but I can't use it like that and the only two things which fixed it were reinstalling the OS (but the problem would appear again after some use) or downgrading back to the Windows 7.

My system specs:
-2x4Gb RAM DDR3 1333MHz Corsair Value Select
-XFX HD6850 Ghost
-AMD FX-6100
-1Tb Western Digital Green WD10EARX (Divided in 2 partitions, one for the system and another one for everything else)
-Corsair CX500
-18.5 inch Samsung SyncMaster S19B300 monitor
-Multilaser gaming keyboard
-A4Tech Bloody V7 Gaming Mouse

I edited the Windows 8 registry to get my profile files to be stored into the D drive instead of the C, but no one who did the same seems to be having any problem.

Sorry for my broken english.
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  1. Unacceptable problem, I updated from wi-7 also & love win-8, Things did NOT go smoothly. Solution was drastic. Save files, Nuke hard drive, install win-7 & register it, Install win-8 (upgrade) & register that. That was my "clean" install per Microsoft license. There is a CONFLICT somewhere in the one hundred thousand files in existing os that the upgrade misses. This is just my experience and NOT the only way to resolve.
  2. Just forget everything I said, the problem is now appearing in the Windows 7 too. What may it be? I never had it before and I have this computer for about one year.
    I'm thinking it may be a problem with the motherboard, but it's very odd that formatting the C drive temporarily fixes the problem, so I'm think it may be a HDD or a driver problem. I can run the computer just fine in safe mode.
    Can somebody please help me?
  3. Well, I have good (or maybe bad) news. I formatted my HDD again and tested something new. This time I didn't installed any program and the computer worked just fine, so it just gave me hope that my problem isn't hardware related. Then, I just decided to install some programs, drivers and everything, and just noticed that I was missing the ACPI driver for the motherboard all the other times I installed the windows.
    Now when I log in I'll have all the problems just like before, but this time the computer will just stay on the black screen for a little time and will restart itself after a few seconds and I won't need to reset the motherboard BIOS to get the computer to work fine again, and it just gives even more hope that this is not a hardware related problem (or at least that I'll find a workaround).

    I'll be searching for any kind problem that may cause the OS to reset after login, if you know any solution for it, please, let me know.

    Obs.: When the computer restarts and I log in I can see a message saying that something caused windows to restart and asking if I want to send information to Microsoft just before it freezes and restarts again.
  4. Problem seems to be gone (I hope it is). I tried disabling fast startup but it didn't work, then I found this command prompt code which seem to have fixed it: "bcdedit /set disabledynamictick yes" (Remember to write without the quotes and to run the command prompt in administrator mode). If you are having any issues with freezing, auto shut down or auto restart you should try this out.

    If the problem shows up again I'll let you know (Hope I'll never return to this thread again).

    Thank you all for your... positive vibration, maybe?
  5. Problem appeared again when I installed the graphics card drivers, but retyping the code in the command prompt fixed it again. Guess I'll have to keep doing it every time I install I new program unless someone knows a way to permanently fix it.
  6. I read something somewhere about "dynamic" screwing things up. Sounds like your on to something. Positive+ vibes your way!
  7. The problem is very different now:

    I log in and the computer freezes right after it, and I have to force restart it. It'll happen three times and after this, I can log in just fine, but my onboard ethernet won't work and I have to reset the computer using the motherboard's jumper (restoring default settings in the BIOS menu won't work) and reconfigure the BIOS (leaving it on default settings won't work) and, after that, I'll have the computer working as it should. Of course this is a headache, even more for me 'cause to use the BIOS jumper I have to remove my graphics card, as the motherboard is a mini ATX and the graphics card covers the jumper and the battery.

    I heard a similar problem could occur, but the computer wouldn't load the OS and it usually happens due to overclocking, and, of course, I doesn't cause the ethernet to not work.

    I just updated the BIOS recently and I was having problems with the old BIOS version, so I don't think flashing the BIOS will work.

    It also only happens on a cold startup.

    I think I'm so close to get it working, so please, give me some advice!
  8. I think I may have found the problem: On the device manager I just located my network adapter and I found out that under the power management tab there was an option enabled "allow the computer to turn off this device to save power", I just unchecked it as it's very likely to be causing the problem.

    If it doesn't work I'll let you know.
  9. I can already see the finish line!
    Just made a little test and only had to restart the computer once and didn't have problems with the network connection. If any of you know about something which could cause windows to freeze after the first log in and having to be restarted for it to work, please, let me know (fast startup and dynamic tick are already disabled).
  10. Network problem started showing up again!

    After trying to troubleshot the problem for a few days I got mad and started uninstalling all system drivers in the device manager. And guess what? My first boot was successful as if there was no problem in the computer.

    I don't think it's the end of it, but at least after all the troubleshooting and this madness, I know the problem is in the OS. I just looked into my event viewer and found lots of errors about the system not being able to load system functions and drivers, and kernel was the one which had most problems.

    This is the weirdest problem I ever saw!
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