On 6/8/2018 11:51 AM, dl2uv wrote:
My Latitude E4300 laptop worked flawless until the KB4100403 was due for
installation. The installation was performed and a reboot was forced.
When booting, the laptop shows a litte blue circle, which can be moved
with the mouse. This condition lasts forever. The windows-10 functional
update 1803 is installed since May 2nd.

Any hints?

Klaus

Start the computer, wait ten or fifteen seconds, then press and hold the
power button until the computer shuts down. Do this twice and the third
time the computer should boot into the recovery environment.

Ben