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I'm running Windows 8 trough Boot Camp on my 15" MacBook Pro Mid 2010 (Model 6,2). This has been working well for a long time. Since yesterday I'm having this issue though, that Windows boots to the welcome/login screen and when I try typing in my password nothing happens.

The cursor is in the password box but the box seems to be not working. The keyboard works otherwise (Space brings up the login box for example). I have tested this with both an external keyboard (the one I'm typing with right, now from OS X) and with the built-in keyboard on the notebook. I have tried with all peripherals disconnected leaving only the power cord plugged in; same result.

As a hint: When I go to the accessibility icon and try to load the on-screen keyboard, I get an error message "The on-screen keyboard could not be loaded", which shows only for a split-second and disappears.

I have wiped my Windows partition and installed Windows 8 from scratch, following with an upgrade to 8.1 from the store. The software I installed was fairly basic and well known: Java, VMware, Photoshop, Steam, Wuala. No fancy stuff.

I managed to boot into safe mode with networking once (it's harder than it should be) but there was the exact same problem.

This is really frustrating. I have no clue what's causing this or what I could do to fix it.

Any help is appreciated.

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  • I hope you have data in a partition that can be accessed by OSX. Did you try a new install just now, or is this the one that has worked before? How long since you upgraded to 8.1?
    – SPRBRN
    May 17, 2014 at 8:36
  • I have all data properly backed up, that's not an issue. I have re-installed Windows yesterday, after having this problem and knowing no way around it. The problem reappeared pretty much instantly after installing 8.1 and updates and the mentioned software. Could it be that a recently released Windows update broke something specific to my configuration? May 17, 2014 at 8:40
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    @AlexanderRechsteiner Consider installing just Windows 8.1 without extra third party software, and disabling the updates temporarily. If you can't reproduce the issue, enable updates again but make sure they don't get installed automatically. Then install the available updates one by one. Take note of the update KB number, and restart Windows each time until there are no updates or the problem reappears, whichever comes first.
    – and31415
    May 17, 2014 at 9:28

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