HP PAVILION DESKTOP PC P6142P WINDOWS 7 PROBLEM

NP218AA – HP PAVILION DESKTOP PC P6142P

I came across a customer having a problem with their NP218AA – HP PAVILION DESKTOP PC P6142P booting up to Windows 7 Ultimate after upgrading.  It turned out the problem was that a black screen would come up after the loading windows screen.  The screen would stay dark and according to the customer it wouldn’t come on for four hours.  The computer was actually booting up, just no display.  When the computer was turned on and booted if I turned the monitor off and on the screen would actually come up.  But you had to do this everytime, not a good solution.  I ended up turning off the aero interface and going to Windows Basic Display.  Upon looking further I also noticed that the display adapter was showing 2 monitors installed.  This was incorrect.  There was only 1 HP monitor installed.  Windows was actually trying to display the video to a monitor that didn’t exist.  I disable the incorrect 2nd HP monitor and the problem went away.