I updated a Dell Precision T1600 from Windows 7 Pro to Windows 10 Pro.
For about two weeks all was well (apart from a few minor issues).
Then, out of the blue, after a Windows 10 update I am sure, I began to experience a black screen (with or without flashing cursor). This happens after the Power-on Self Test (POST), when the Dell logo appears.
To get into Windows I have to Power on again and again and again until the system gets to Windows.
I have spoken to the Microsoft Help Desk (absolutely useless) and the Dell Help Desk (not very helpful or useful).
The problem does not go away on rolling back to Windows 7. I have gone back to Windows 10.
I have an Nvidia NVS 300 supporting a dual screen configuration. The Nvidia drivers are up to date.
When I use the on-board adapter, the problem is still there.
The Dell diagnostics run clean.