My daughters laptop (latitude c640), appears to power up, but we end up with a black screen. It does not appear to be in sleep or hiber mode, as hitting power button once does not wake it.
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I suggest you DONT USE PINCH POWER CORD FOR SAFETY.
PLEASE TELL ME IS YOUR POWER CORD & THE PINCHED CORD ARE SAME? I MEAN SAME MODEL? AFTER PLUGING OF YOUR CORD, THE BATTERY CHARGING LIGHTS ITS ON? IF NO THEN I GUESS THAT CABLE NOT SUPPORT HER LAPTOP.
VISIT A DELL SERVICE CENTER OR A SHOWROOM AND BUY NEW CORD WHICH IS MADE FOR YOUR DAUGHTER LAPTOP MODEL.
OTHER WISE SOME CHANCES OF SHORTCIRCUIT ON MOTHERBOARD.
Thanks, i am waiting for your feed back & if you satisfied then thumps me please.
Try putting the computer into safe mode by holding down on the F8 button and selecting safe mode during the boot process. Once you get to the safe mode screen and windows appears, restart the computer.
If that doesn't fix the problem you will have to restore Windows.
Symptoms of a Bad Video Driver Monitor Resolution issues: screen flickers, screen is
cloudy, screen shows horizontal lines, screen goes black, goes blank,
goes into sleep mode, goes into power mode, size magnifies or reduces,
video is jittery, fonts change, screensaver will not appear, cannot
extend display on dual monitors.
This sounds like it is not getting enough amperage from the power brick- check which model power brick you have. I'm not 100% sure but the pa-6 family may not provide enough power to charge and run the laptop at the same time. the PA-9 should- if it's rated at 4.51 @20v - that works out to about 90watt. If you DO have a 90 watt power adapter and it's still giving the orange then red flashes- and will not charge when the laptop is off- you probably have either a bad battery, or the motherboard is faulty and has a bad charge circuit, or a loose power jack. What does pressing the little button next to the charge indicator on the battery do? Flashing every other led- 1,3,5 is BAD, so is 1 and 5. You also might have a 3rd party refurb- that had the guts torn out and is not properly "seen" by the laptop.
check the video cable
and see if it;s properly seated.
run the laptop with something that uses memory. if the video chip it going to show signs of problems, it will be more prominent when the laptop gets hot.
most cases laptop motherboards have integrated video cards and cannot be replaced.