I have an old Laptop Dell Inspiron 3537 i7 4500U and HD8850M (AMD) one-day suddenly laptop screen backed out and after Restart GPU showing as Microsoft Basic Display Adapter, I have tried Reinstalling windows and opening the laptop put fresh thermal paste too still GPU don't work and when install Drivers it just Freeze the laptop screen and Nothing happen until press power button long enough to shut down laptop and restart. Any help I will add a 
