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#1
Black screen part way through booting - Power Key needed to recover
I've recently updated an HP EliteBook 8560p from Windows 7 Pro to Windows 10 Pro. Once booted (see below) the display looks good and everything runs fine. However, booting requires the following steps:
1) Press the Power Button. The system seems to start up with the Windows "flag" and the rotating circle of dots showing for a couple of seconds. Then the screen goes black - no cursor or anything but the disk activity light indicates that the system is (apparently) continuing to boot.
2) Wait until the disk activity light stops flickering. The system is NOT sleeping at this point.
3) Press the Power Button to put the system to sleep.
4) Press the Power Button AGAIN to "wake up" the system AND THE SCREEN.
NOTE: This system always seems to require that the Power Button be used to wake it up from sleep. Although configured to allow them to do so, neither the keyboard nor the mouse will wake the system. This limitation may or may not be related to the "boot" problem mentioned above.
I have used Device Manager to update all the drivers. The driver for the AMD Radeon Graphics HD6470M is version 15.201.1301.0 dated 8/19/2015, which I believe is the latest one.
Any thoughts/suggestions would be greatly appreciated!