after upgrade to windows 10 from windows 7 my dell inspiron n4050 lap top screen goes to black screen.After login with my password,desktop shows.then i can access my computer for a short period of time up to 2 minute.during this time i can use my computer as normal.
in the black screen window,i can take task manager and access my laptop using task manager.but desk top still remaining black screen.
when i check device manager,it shows two graphic adapter is available (AMD radeon HD 7400m series and Intel(R)HD graphics 3000).Also i update my bios version to latest A08(for windows 8.1).for windows 10 it is not available.
I got a pop up saying "No AMD graphics driver is installed, or the AMD driver is not functioning properly. Please install the appropriate driver for your AMD hardware."
please help me .......