the back light on my laptop suddenly went out.Any ideas whats wrong and is likely to be expensive to fix?
340317
The backlight of a laptop is a fluorescent panel driven by a power supply that takes battery power and generates a higher voltage suitable to make the panel light up and vary the light output.\n\nA rough guess is you damaged the fluorescent panel, it's power supply has blown up and since a lot of manufacturers have the power supply up in the lid of the laptop the flexible cable has flexed once too often and broken a wire to the power supply.
424595
If none of the above has worked it is likely the backlight has blown, this bulb is inside the screen and allows you to seee what is on the sreen, if it's under warantee yor ok, else repair likely to cost 100's
160772
1.Please check the Cable connecting your computer.\n2.Please check the Internal Wiring ( if you can ) else call the service engineer he will be able to fix it.
973133
Black--or blank ?  \n\nIf it's black, then It sounds as if the power saver function might be on the fritz.\nUsually, striking a key or wiggling the mouse brings the last image on the screen back up.  Does the monitor have a small light on the front that is green when the screen is active? If that light turns yellow when the screen goes black, that tells you that the power saver function is on.  \n\nIf it's blank [not black], then I don't know what to tell you.  Call tech support and try not to lose your temper with the overseas representatives.
889480
My wife has the same laptop and, when the "A" key came off we were forced to replace the entire keyboard to solve the problem. She found a keyboard online and we had the work done by a local PC shop. I don't recommend trying to replace the keyboard on a laptop as a DIY project.
133155
if you got it used. then the batt is dead. if you got it new ans under 2 years. then i would also have you systemboard checked out. some dells systemboard for laptop came from compal systems. that did make systemboard that where bad contacts that charge the batt.
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.
463965
ok first of all check your adapter weather its working or not. For this you can use digital or analog A/C D/C meter. If the adater is working fine the next thing is your main battery pack of laptop. Usually all manufactures only give 1 year warranty for battery pack and in some casses battery pack did not work properly due to extensive charging . If it is in warranty then go to your dealer from where you buy the laptop. The third and final diagnoses for this problem is the system board of your laptop. Because sometimes due tp spike of electricity cause damage to the system board of laptop and make it unabel to charge the battery or even start with the adapter pluged in. \n\nSo if your system board is damaged and its not under warranty then I suggest to get a new one dude.
66138
I would say you contact DELL, coz it could be a safety hazard issue here. They might even offer you a replacement in this case. Just try ur luck.
380246
Reset CMOS. Better still, remove and replace the CMOS battery.  If that does not work, then you need to have the motherboard tested to see if the back panel connectors are working properly.\n\nEdited- PN   she said she already checked the keyboard on another pc, besides if the CMOS battery dies, it can do so quickly so you would not be able to tell if time was kept properly.  This is from years of experience with PC repair, so before you answer, read the question.
1164223
your LCD screen on the laptop is damaged. Send it bad to the HP manufacture as a RMA through their website, they should repair it if its still inthe warrenty
1045921
1) Of course there is the obvious - Is it plugged in?  \n2)  Make sure the cable (I'm assuming it is not a laptop) is plugged in all the way to the computer box.\n3) Try the monitor on another computer if you can.\n4)  If a laptop - try holding down the Function key - labeled "Fn" usually - and hit the F5 key at the same time - this is a toggle to tell your computer to use another video device when you have one plugged in.  You could be toggled to turn off your monitor and look for one plugged in.  Keep holding and hitting F5 to get back to using your monitor.\n5)  If a laptop - it could be from static electricity build up - it is more common than you think.  The solution is hard to beleive but it does work.  Unplug all cords to the laptop - everything.  Then remove the battery.  Now hold the power button on for 3 minutes.  What takes place at this point is - while you hold it down, the power button is pulling all the static electricity from within.  Replace the battery and connections after the 3 minutes. Amazingly if you do this process you will notice a big difference on your screen clarity.\n6). Your graphics card may be bad, try connecting another monitor to your computer.  At times the graphic card may come loose, try pushing it down on the motherboard.\n7).  The monitor may be broken - it is not uncommon that monitors become broken.\n8).  The motherboard may be bad, but usually more than the monitor would probably be affected. \n\nI hope this helps - best of luck if you are having any issues.
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.
56724
Absolutely dead?  No sounds, no lights, nothing?  Check that the power cord is not damaged and is firmly inserted into the power supply and the outlet.  Plug in a lamp or whatever to confirm that the outlet is good.  Check fuses, if any, in power supply.  Test your power supply (see sources).
839227
I have the same issue with mine, I am not sure of what can be done yet, as I have taken mine apart and checked all the connections / cables pertaining this this LCD problem. However,Your laptop can still work with an external monitor. So for a short term fix you need to acquire another monitor / LCD Monitors are reasonably priced now.\nUntil we find the real fix....
387449
Try Change the motherboard battery. It is completely different from the laptop battery and is inside. It keeps time when your computer is shut off. It might have become weak.
267582
I will give you some basic steps to get it working again.\n\n1- Look over the machine amd replug all devies like monitor, key board and mouse, ECT. There may be a loose power card or cable. Also check to see if there are any bent or damaged pins in the connectors of the devices. \n\n1b Check to see if the computer is set up for 115 volts in the back of the unit where the power supply is. There is a little  red volt switch around the area as to where you plug the machine cord in. If it is set to 220 then set it to 115.(assuming your are in the USA)\n\n2 IF your computer is not in warranty then open the case up, Follow your manual to do this correctly.\n(Before removing any thing make sure you touch a metal part of the case first to discarge any static electricy)\n\n2a Use some canned air to clean out the components first and then try to start the computer.\n\n2b.You will have to un seat all devices one by one and then reseat them. For example take out the sound/video by un screwing them from thier fastens and carefully take them out and then put them back in. \n\nDo the same for hdd cables and power cables. These cable must go back excactly as they were put in.\n\nLocate your ram on the main board and reseat this as well.This may be the most important step because a computer will act as though it is compltly dead if the ram is not properly seated. Ram (or memory is easy to find) It has two small white or blue plastic finger clips that fasten them in. Also ram has one or two notches(Depending on type) that make almost inpossible to put them back in wrong.\n\nAfter reseating everything try starting the comuter.\n\n3 if the computer still does not start then youl will may have to replace the power supply.\n\n4 Contact support for additional information.