Cannot enter password and login - Windows 7 Professional

Following an update on a Windows 7 Professional Toshiba Laptop, I am now unable to login.

This has the symptoms of a bad update. Other reports indicate that is is caused by KB3097877 (see later).

You should perform a System Restore to a date before the updates.

• You can do that using your System Repair disk (if you have one).

• You can also press F8 before the Windows logo appears. See What are the system recovery options in Windows?. One of the options is "System Restore".

  

KB3097877 causing severe difficulties for some Windows 7 users

KB3097877 causing severe difficulties for some Windows 7 users November 2015 Windows updates.

We are seeing numerous reports from Windows 7 users about difficulties logging on to windows after doing the November 2015 patch Tuesday updates. We are also hearing about crashes in Outlook 2010 and 2013 when viewing HTML emails.

We also are hearing about crashes in gadgets in windows sidebar on Windows 7 computers.

Note:

Gadgets have been deprecated and are not recommended for use any longer due to security issues. I seem to remember an earlier GDIplus or win32k.sys update having similar gadget issues)

All the problems appear to be caused by KB3097877 which is part of a vital security update included in MS15-115.

This update is a security update that updates Win32k.sys and Gdiplus.dll to help prevent a remote code execution if an attacker convinces a user to open a specially crafted document or to go to an untrusted webpage that contains embedded fonts.

The best advice we can give at the moment is not to install KB3097877 on any Windows7 computer until Microsoft have investigated and issued a workaround or revised patch.

We are having this issue as well on MANY customer machines. It is caused by KB3097877. Seems to only affect Pen and Touch enabled computers. If you can RDP to the machine and uninstall the update then reboot. It will fix the issue.

I have also heard that unplugging the USB cable for the touch screen if you have one works as well.