New
#1
Grey flashing dash on boots? (Windows 10)
What does it mean when you see a black screen that has a grey flashing dash located at the top left-hand corner of the screen? It moves down a bit before finally moving onto the Windows 10 logo, where it sometimes gets stuck and reboots (and the grey dash screen appears again before moving on).
I noticed this issue both during upgrade (when it failed and tried to recover the installation) and after installation. This issue occurred on an Acer Aspire Z5801.
It does not occur on Windows 7.