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As i switch on my laptop it boots but screen is black. But after i turn it off then boot it again LCD start working... help me out plzz.... is it a hardware problem?

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Most likely it is a hardware problem, most likely inverter

Posted on Aug 27, 2010

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I hav an hp pavilon dv 4 laptop.....it workd wel 4 10 mnths bt yestrday when i turned it on a black screen apperared and nthing aftr tht.....thn i turnd it on again bt tooo no avail.....wht shuld i do????...


first up if your laptop is under warranty you should take it to the relevant authority to help you fix the issue if you try to fix it yourself you might lose all warranty on your laptop but if you want to try
During the boot process you will see on the screen to press a certain key to enter setup
Press and hold that key during the boot up process to enter BIOS you can load failsafe defaults or load optimized defaults ,press escape then press f10 to save to cmos to restart
or
During the boot process tap the f8 button three times this will boot into safe mode where the only things
working will be your mouse and keyboard enabling you to attempt to repair your computer



hope this helps

Jan 09, 2011 | Computers & Internet

1 Answer

I don't kno whats wrong with it it was working fine last night. I was using it then the screen went black. Its turn on still but theres no regualr start up or safe mode boot just a black screen.


Can mean alot of things but try removing the battery & and the ram, leave it for sometime and place it back in the system. try run it again.

if not working, try this, remove the Hard drive and boot the laptop without the hard drive or disk. sometimes hard disk causes the system not to display anything on the screen when you switch on.
then you have to get a new hard drive to reinstall the system again.

Aug 19, 2010 | Computers & Internet

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Acer Aspire 5100 Laptop Screen Works Intermittently


Since you have video with an external monitor your lcd panel is going out.This is not hard to repair only costlyhttp://www.insidemylaptop.com/remove-lcd-screen-replace-inverter-board-acer-aspire-5100-laptop/

Apr 06, 2010 | Acer Aspire 5100 Notebook

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Gateway notebook goes BLACK when connecting new lcd tv to laptop


try setting the frequency down to 60hz and the resolution before you connect. then if it works you can set it up again with a setting the TV likes

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Booting continues but screen is black.


it is because of your lcd panel problem. So please give your laptop to a authorised sony dealer.

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Dell inspiron does not boot up


Do you see anything on screen? Dell logo? I will assume you see nothing. Not even a Dell logo.

First test your power supply with a meter to be sure it is putting out 18-19 volts. If good, remove the laptop battery and try again. The next tests should be done with the battery not connected to the laptop.

Remove the hard drive and see if it boots. If not, next remove the dvd drive from the laptop and try to boot. If no good, remove the ram, clean the contacts on the ram and the slot with a pink pencil eraser....gently, just make them shiny. Try to boot with no ram/hdd/dvd. Put the ram back in and try again. Try connecting the laptop to an external monitor.

If after all this you still cannot get a Dell logo at boot time, the mainboard is likely dead. A refurbished one (with only 90 day warranty) will probably cost you at least $250 from Dell. Please let this one go and look at a new laptop.....sorry.

Hope this helps :)

Aug 23, 2009 | Dell Inspiron 6400 Notebook

1 Answer

Notebook won't start/lcd is blank but the power is on


You could have a faulty motherboard or RAM.
First remove the main battery and boot up the laptop without the main battery connected, if it boots up insert the battery, no need to power down. If that doesn't work, switch off/disconnect the adapter and insert the battery, then reseat the RAM modules and boot up.

If nothing works then you have a piece of junk. You can salvage the hard disk and put it into an USB hard drive adapter case and use it as an external USB hard drive.

Apr 12, 2009 | ASUS M51Sn-A1 PC Notebook

1 Answer

Dell inspiron 6400 display goes off < 1 min after switch on time


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 definitely the backlight.

If you see a very dim image or black screen or flicking image on the LCD screen it means you have a backlight problem.

The buzzing sound is most likely the inverter 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.

Mar 26, 2009 | Dell Inspiron 6400 Notebook

1 Answer

Laptop starts to boot then screen goes black


when the windows are going in the booting and it is colored black, the problem can be wrong with the windows or set the mode dual setting LCD 1st graphic assign it, try to use external LCD Monitor or connect to back of laptop

Dec 14, 2008 | Acer Aspire 3680 Laptop

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IBM T40 Laptop screen goes black, will not come back


First of all, you have to check whether you can see video signal with surrounding light tilting the screen.
If you can see dim image, all you have to do is replace back-light inverter or fix it. Usually, the fuse is open and you can connect it by simple soldering.
If you can't see dim image, it is another problems.
Give it a try.

Dec 09, 2008 | IBM ThinkPad T40 2373 Notebook

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