Good day,
Follow this steps
1. When you switch ON your computer, start tapping the "F8" key to get
"Windows Advanced Options"( if boot menu appears, press "Esc" key and
keep tapping the F8 key)
2. Select the option "Last Known Good Configuration".
If the problem still exists then follow the step 1 and this time select the option
"Safe Mode". Check if you are able to boot into Safe Mode.
Had discussed on this
http://ccm.net/forum/affich-685603-dell-laptop-showing-black-screen-after-start
Hope this will help your concern.
While deleting pictures from my desktop, the screen went blank. I had 6 Bleeps/buzzers seems to be coming from the motherboard near the graphics card. I tried to restart several times but still get blank screen, and the bleeps/buzzers is still happening 6 times, . Can someone help. Sue

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