Windows 8 Upgrade problems invalid_extended_processor_state

  Carnageangels 23:22 PM 10 Feb 13

I have a self built computer currently running windows 7 64 bit. I have recently tried to install the windows 8 upgrade. It installs but on first boot i get a message 'their is a problem and windows has to restart and to refer to the thread invalidextendedprocessor _state. The machine then restarts and does the same again within seconds of the metro apps loading. When I tried this I installed windows 8 upgrade from the exe file from the download. A friend has told me I will not get this issue now if I upgrade from the proper win 8 upgrade media disk. I am not sure. I really do not want to reinstall win 7 all over again if it does not work. When I run the download assistant the only thing I dont understand is that my pc does not support secure boot so I can not use it though I doubt this is causing the problem. I cannot find if my cpu supports the nx.PAE and SSE2 requirements of windows 8 but it is not an old processor. I done a clean install originally so I think it is unlikely to be a driver conflict. Any ideas anyone? I have a M4A78LT-M LE Mobo with an Athlon 2 x4 640 3.0 Ghz processor. Thanks in advance for any help.

  Carnageangels 10:04 AM 11 Feb 13

Thanks Jock1e. It does start in safe mode and remain there no problems. But nothing comes to light in there. In cannot find any conflicts (well nothing that sticks out and says here I am). I think I shall just try again this time with the media disk. Perhaps trying to install windows 8 from the image on my desktop might not have been the best idea of 2013.

  xox101 13:16 PM 11 Feb 13

It's never a good idea to try and do an in place upgrade in Windows. Leads to no end of problems in my experience.

Copy all the docs etc you need and then either burn the Windows 8 ISO to disc or use the Windows 7 USB Download tool to burn the ISO to a USDB stick of at least 8 gig capacity.

Then do a clean install of Windows 8 formatting your hard drive when asked to do so.

This will wipe your previous Windows 7 install including ALL files so make sure you do a comprehensive back up beforehand. But this is the only way of ensuring that any problems you do get are not caused by your old Windows install.

Have you checked that all Windows 8 drivers are available for your PC?

  Carnageangels 16:16 PM 11 Feb 13

Thanks all. I now have a back up upgrade disk from microsoft so I can load it via the dvd. I have downloaded the upgrade assistant and it stated that all the things I have on win 7 will work in win 8 including xfi soundcard and nvidia 450 graphics. I am hoping the clean formatted install will do the trick. I will let people know if its sorted it.


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