Why does my powerbook G4 backlight go out?
140423
Most likely the inverter is going. Could be the backlight but usually the on/off is from the intverter. If under warranty then get it in soon and make them leave it on until it craps out. These parts can range from $50 to $200.
909946
if it is about the screen saver,\nright click (anywhere except taskbar) on your desktop -- properties -- tab screensaver -- change the drop list menu (e.g. to none) and also check for power setting (the button below the drop list menu)
660735
well go to control panel-power settings and adjust it from there ... make sure you dont have the settings too sensitive ... enjoy ..
467158
try going to display properties -> screen saver -> power settings. there should be an ajustment for monitors.
1157469
Very interesting.  it sounds like the wiring leading to the power light or possiblely the battery could be the problem  \nif you can afford it replace the battery  (I recommend Lithiom Ion) (Li ion)
870921
You may have a stuck key, check your keyboard or a card half unplugged or your cmos battery is dieing.....or just about dead...if the computer does not run or load programs, then it could be screen or Memory is wrong or not plugged all the way in...
5115
If the laptop or the battery are powering up when the adapter is plugged in then, the LED may be faulty.  If the laptop does not power up or the battery doesnot charge then the adapter is definitely faulty.  Also try plugging the adapter into different wall socket.  If your adapter has a detachable "kettle lead" with plug, then try chaning this lead.\n\nBattery Wizard\nhttp://www.ComputerBatteries.co.uk
276219
Why not check the simplest thing first. Go to Control Panel and select Power Management. Check the entry Standbymodus - is there a time defined? If yes, set it to none or never.
763619
it cannot be the power supple or it would say that there is low power voltage and to  press F1 to continue to Windows. YOu should reinstall you hard drive with the reboting Cds that you should have gotten with your computer. Yopu will lose all your files. But it will probably work. If it dont then you should buy new IDE cables.    Fixing a motherboard should be your next  2 second thing to do.
950094
Try powering up without the battery fitted if that is possible.\nI had a similar problem with a Toshiba. The battery was so dead that it effected the power to the on switch.
393266
there is a green lamp on the AC adapter. does this lamp light wenn the AC adapter is connected to the outlet? is it still light when you push the ON-switch of the laptop?\nIf yes, you have a defective mainboard (more precise, a defective internal power module - this is the weak point of the most Dell laptops).\nbut - if the green lamp on the AC adapter dim when you push the ON-switch, there is most likely a short circuit on the mainboard.
200722
It could be your power supply, if so the follow the link below to order a new one.  You can order a 400 watt power supply for  $22.99 from tigerdirect.  Power supples are really easy to switch out, just don't unplug anything til you have the new one screwed into the back and change them out one at a time if you aren't real comfortable with doing it.\n\nBut I would open up the case to see if there are any obvious problems first.
660519
Yeah, using the backlight and playing games on it will weaken the battery sooner.  The company determines how long the battery will last by just basic usage, which means no backlight and games.  Just playing music.
133963
1. Go to Start > Run\n\n2. Copy and paste this text into the small window (without quotes):\n"powercfg /g off /option videodim"\n\n3. Click OK\n\nIf you want to re-enable dimming on battery power, replace "off" with "on"
1094049
Here is a link to ebay with some replacement 17" LCDs for powerbook g4's..\n\nhttp://search.ebay.com/search/search.dll?from=R40&satitle=+powerbook+g4+replacement+screen
852018
If your screen showed up white on your laptop then it's not the backlight.  Your screen would be very dark and pretty much impossible to read without a backlight.  Since you tried another monitor and had the same result, or at least that's how I understand it, it sounds like it's a graphics issue.  It's possible that the shock of slamming the lid shut has caused damage to your motherboard.\n\nIf in fact you could see everything when you used a monitor, you very well could have broken a contact on your motherboard, broken a cable, or something entirely more fun than either of these.  You could break out the multimeter and check contacts, but that may prove to be quite tedious.  It seems like your problem is directly linked to the connection of the LCD.  Poke around a bit and see if a ribbon cable isn't seated properly or something else.  I'm not familiar with Dell's method of routing the video signal from the mobo to the screen.  Good luck.
472092
are you powering up with your battery alone, or are you plugged into an outlet?\n\nhow old is your computer? is it worth spending money to fix it by going to a computer repair shop?  are your files very valuable?