Black screen Dear sir, my pc monitor becomes black afterxp logo.

Hello, your VGA Cable, HDMI Whatever cable you use to make your monitor show screens, you must make sure the VGA (only) is securely secured into the socked and screwed in, sometimes the little rods inside may be bend and this can cause this to occur. HDMI cables may not work do to it being broke ect. Same with VGA.

What changes have YOU made to your DELL? This can be hardware or software related, so please let us know if you have changed anything prior to this problem.

You can open the VGA cable and connect it again, sometimes there are two or three vga ports behind your cpu, connect the right one. Try it, if not success, change the cable.

Had same problem, Monitor first turn on, backlight off after couple of minutes, off/on backlight off after few seconds.
Solution cut J503.
Found voltage OVPT (IC501,7) quite low (1.6V) this is the reference value for VSEN the over voltage value. By cutting J503, OVPT becomes 4.5 volt but is not depending anymore on the current through the lamps. Instead of the link J503 I solder 2x 1N4148 diodes which makes the OVPT not go below 2,8 volt. (diodes in series, cathode points to nearest board edge)

If you are getting the logo in the beginning that means screen is fine. Reset defaults for BIOS and try booting your computer with the help of disk.

dear sir good day it means that your pc have a HW failure and most propaply it is from the VGA card so please replace it thanks

Good day sir/maam, when your LCD becomes black, the backlight of the LCD screen just went bad. this is caused by the failure of the inverter circuit board and/or lamp, at this point you don't have much choice but to bring it to your dealer for possible inverter replacement, at the moment if you want to see your display, you can plug in an external monitor temporarily. you can activate it by pressing Fn + (locate on your keyboard a picture of a monitor with the same color as your Fn key). hope this helps.

please explain further. keeps going black from where? after turning on the laptop? of after windows logo? if after windows logo screen turns black if a no boot issue where laptop cannot load system files. if screen is black after turning on no manufacturer logo and windows logo or anything then it might be the LCD or video card / motherboard. to isolate try connecting your laptop to an external monitor and check if you will be getting the same problem. if no display from the external monitor then its a video card issue, if video card is integrated needs to replace motherboard.

DOES TOSHIBA LOGO OR SCREENSAVER SHOW AS COMPUTER IS TURNED ON.

BETTER YET DO YOU HAVE ACESS TO ANOTHER MONiTOR FROM A DESK TOP IF SO CONNECT MOINTOR TO THE LAPTOPS EXTERNAL MONITOR CONNECTOR (BLUE IN COLOR) MOUNTED ON SIDE OF LAPTOP OR BACK IF VIDEO IS VISIBLE ON THIS new MONITOR YOU HAVE AN INTERNAL VIDEO DISPLAY connector PROBLEM or bad display

Have you tried another monitor on the PC? If the cable and connector pins are okay, I would suspect a problemn with the video / signal board inside the monitor.