Problem: laptop won't start, black screen, everything else is running.
LCD Bist test (d+power) works just fine. Then again black screen.
I connected external LCD (pressed fn+f8 on start up) and was able to see the windows logo then blue screen announced that video driver crashed.
System test (fn+power) Gives Monitor problem Msg: Error code 2000-0321. Msg: Unable to detect LCD. Finally I was able to start windows after I uninstalled ati video drivers. The red vertical lines appeared.
Tried installing multiple times different video drivers with the same result: blue screen- video driver failed.
Once windows starts normally on the laptop screen with standart video drivers. After restarting the system I have to use external lcd again.
I will appreciate any advise or suggestion. Thx
Dell studio 1558
Intel i5 m450
Ati Radeon hd 5470
500 gb Samsung
Bios a12
Gpu cpu temperature is normal