Windows 8 upgrade from vista issue after 90% completion pc reboots and display b

I use window vista OS , There is no issue in compatibility when I upgrade windows 8 , i did installation till 90% but then pc get restart and show blank screen
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More about windows upgrade vista issue completion reboots display
  1. you have to describe your hardware or look in the windows 8 setup log to see where it was when it failed. Often you will just want to go into your BIOS and disable some non essential hardware to get the setup to complete. Then you can re enable the hardware later and actually fix your problem with a working OS. Or remove some hardware (like old multi card readers from certain vendors)
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