Security Update for Windows 8.1 for x64-based Systems (KB2982791)
Update for Windows 8.1 for x64-based Systems (KB2975719)
that were released yesterday both give me nothing but a black screen after the second reboot after their install.
I have to system restore to get a bootable system again.
The flag shows up and the throbber then when the lock screen usually appears it just goes black, after 20 minutes no OS.
My system is an i7-4770, 750ti, 16gb ddr3, samsung 840 evo, so I'm used to my system booting in about 5 seconds.
This behaviour is repeatable always for me, it's taken me all afternoon (in between being ill ) installing, booting twice to check, then booting more on fail to get to sys restore menu to narrow it down to just those two updates.
The first reboot after the install is fine, the next reboot gives a black screen dead system, no cursor.
Maybe it's the nvidia gtx 750ti with 340.52 whql driver, as it just flicks to black when the display normally kicks in, but I don't want to lose any more time tonight downgrading that and doing more update installs/sys restores.
win 8.1 x64 pro with media centre.