Generrally happens when i'm doing a lot of things at the same time.first the display turns off as if going to sleep and after 5-10 seconds it gets turned off.
SOURCE: No display on screen
Follow this link for diagnostic error codes for your model: http://support.dell.com/support/edocs/systems/dimc521/en/SM_EN/tshoot.htm#wp1064555
It appears that your video circuit has a problem, not the monitor but the graphics card or on board graphics controller.
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SOURCE: dell latitude D600 display blacks out, showing just a ghost image
Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is the backlight.
If you see a very dim image or flicking image on the LCD screen it means you have a backlight problem.
Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.
SOURCE: Monitor keep going into "sleep" mode
try to reseat the memory modules and restart the computer and computer boots to normal mode/then go to power options in control panel and disable the sleep mode option for the hard disk
SOURCE: Dell E193FPC
MY MONITORIAL LEAGUE AND 3 SECONDS LATER GO BELOW ARE BLACK BEING OR CONNECTED TO THE COMPUTER WHICH IT CANNOT BE HELPS ME TO THE PROBLEM I AM NOT IN CONDITIONS TO CHANGE OF MONITOR NOW AND ADORE THIS WAY OBLIGED THE MODEL DELL E193FPC
SOURCE: my radio switch on my Dell latitude e6400
start, the control panel, then network connections, then right click then enable the one you use
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