My Computer crashed after replacing authui.dll


  1. Posts : 3
    Windows 7 Home Premium 64bit
       #1

    My Computer crashed after replacing authui.dll


    i was on askvg.com and found win8 login for 7

    i replace authui.dll in system32 and sysWOW64

    also replased basebrd.dll

    then tried it out by switching user i got black screen

    then rebooted and i still got a black screen

    then i booted into startup repair and then it gave me an error

    now i have startup repair infinite loop

    please help i wanna use my PC !
      My Computer


  2. Posts : 1,436
    Windows 8.1 Pro x64
       #2

    Try going into safe mode by pressing F8 at start up. Then try using system restore to restore back before you modified the file.

    -Justin
      My Computer


  3. Posts : 3
    Windows 7 Home Premium 64bit
    Thread Starter
       #3

    i cant their is an infinite loop of startup repair
      My Computer


  4. Posts : 1,436
    Windows 8.1 Pro x64
       #4

    Load your windows installation disk, go into the BIOS and select your CD/DVD drive as first boot. Then try to do a system restore from there. Since you will be booting with the disk, it isn't loading windows from the HDD so you should be out of a infinite loop.

    -Justin
      My Computer


  5. Posts : 3
    Windows 7 Home Premium 64bit
    Thread Starter
       #5

    dont have repair disk
      My Computer


  6. Posts : 26,869
    Windows 11 Pro
       #6

    Find someone else who has Windows 7 Home Premium X64 and make a repair CD from their OS and use it on yours. Try to restore using a time before you replaced the dll. I would recommend if you are not very familar with windows 7 you not replace or delete dll files or any other system type files.
      My Computer


  7. Posts : 12,120
    Win 7 Pro x64 / Win 10 Pro
       #7

    Here is a other option to try SFC /SCANNOW : Run in Command Prompt at Boot
    Jerry
      My Computer


 

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