I have an LG 200 laptop. several weeks ago it began displaying a blue screen saying an error was detected and the computer was shutting down, then that there was a crash dump. After this, the computer would always restart itself and work fine. This happened only if I shut the computer down after use. If i left it hibernating it never had problems turning back on. Last night, after a crash dump, the computer restarted. The small window on the top of the computer worked, the fan came on, most of the lights came on, however the monitor remained black. My dvd light still fickers and I can hear the computer working when i push ctrl alt del to start task manager, but the screen remains black. ive tried the dimmer and everything else, i don't know what could possible be wrong.
In case you were wondering, I let it go on for so long because I'm living in Spain and my warranty is in Nova Scotia and I don't know where compliant repair stores are. Id just like to get a ballpark of what I should tell the maintenance people where I go, or get an idea as to what is most likely wrong.
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If you can get your laptop connected to an external monitor it will do the main troubleshooting for you. With it connected and set to display on the monitor, the 2 options below are pretty solid;
1. If the monitor shows your nomal desktop display without any distortion or lines, etc, then you can be fairly certain your LCD screen panel on the laptop is just wearing out.
2. If the monitor shows exactly what the laptop does, i.e., same exact problems, then it means that the Video chip on the logic board is about to fail and you'll have todecide whether to repair or upgrade to a newer machine.
There are severals ways to determine what component is at fault, through some of them may require equipment you may not have on hand.
If the lines move, appear, and disappear as a result of changing the hinge angle, the problem is most likely in your LVDS cable, which is not an expensive part.
If they don't, then you need to attach an external monitor using the short white video dongle that came with your PowerBook. If the lines also show up on your external monitor, your logic board is at fault, which is an expensive fix and probably not cost-effective for a machine of this vintage. If the lines show up on the built-in LCD but not the external monitor, the problem is with the LCD panel itself, which is a medium-expensive part.
When connected to an external display you have 2 options. Extended you can stretch across both screens like a giant desktop or you can have mirrored displays which have exactly the same thing on each. With your monitor plugged in...
Open Apple ▸ System Preferences..
Go under Arrangement section
Check the Mirror Displays check box
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Take a look at these discussions:
Maybe a solution.
Press the F2 key several times to make sure that the screen brightness is up.
Put your ear down on the laptop on the zone left of the trackpad and below the keyboard and listen for the little whirring and clicking noises of the hard drive. If it is making noises, just walk away for at least 30 minutes and see what happens in that interval.
Look carefully at the screen in good light and make certain that here is no image on it. You could just have a bad backlight.
If so, you can connect the DVI port on the MacBook to a computer monitor or most flatscreen TVs and regain access to the screen until you get the backlight repaired.
You might try that regardless. Even if your display is totally inoperative, the DVI port may still function.
If the drive has stopped making noise and the screen is totally blank,
1. Try starting up the MacBook with the DVD that came with it, and if that doesn't yield anything,
2. Take the MacBook to the Apple Store and ask for a Genius appointment.
When you connect an external monitor to your MacBook (or PowerBook,
for that matter), you can combine your MacBook's LCD and your external
monitor to create one big monitor. That means when your mouse pointer
goes off the edge of one, it will appear on the other. Open the
Displays Preference Pane to configure the resolution and orientation of
the two monitors. This type of configuration works well when you want
to keep your main work on your larger external display, but still keep
things like IM, iTunes, and email constantly visible on the smaller
Some windows act like they don't want to be
dragged on to your external monitor. If a windows is being stubborn,
try dragging it up to the menu bar, and keep dragging, even if stays
stuck below the menu bar. Sometimes once you have dragged it far enough
that it has room to render the entire window, it will jump to the other
monitor (Terminal used to have this problem, but Apple fixed it some
time ago). If that doesn't work, try dragging it from a corner of your
monitor. My Adium contact list
doesn't seem to want to live on my external monitor, but I can coerce
it up there by dragging up from either corner.
laptop is open, you can't switch to using the full resolution of an
external monitor. I have no idea why, but it's a fact of life for
MacBook users. You can use both displays in "extended" mode, or you can
mirror your MacBook's display (which most likely doesn't use the full
resolution of your external monitor), but you can't switch to using
only the external monitor. Very strange.
If you close your
laptop, you can actually get the full resolution of your external
display. Put your MacBook to sleep, connect your external display and
an external monitor, and wake the computer up by pressing any key. You
will have full use of your external display while your laptop is closed.
you really want to have your MacBook open while only using an external
display, after following the procedure above, you can open your
MacBook, and it's screen will remain off, which means you can still use
the MacBook's keyboard and trackpad. Why you can't get into this mode
using F7, I have no idea. This is a good technique for allowing some
heat to dissipate while still using an external display so the lid of
your MacBook doesn't melt or warp.
You can boot your
computer using just an external display. Just connect your external
display, open the lid, hit the power button, and close the lid again
In order to output only to an external monitor,
you have to have the power cable connected. I tried for several minutes
yesterday to get my MacBook to wake up with an external keyboard and
monitor before unpacking my AC adapter from my backpack, and it
wouldn't work. It took me a while to make the connection (no pun
intended), but I eventually discovered that with the power cable
attached, everything works as expected.
First of all, try a restart with the monitor attached. Secondly try going to the system preferences panel- It should be in the dock - the icon with the apple and the light switch. Try to "detect displays" and see if it comes up in the menu and if the screen responds..
Try adjusting the monitor brightness (F2). If you have an extra monitor, try connecting the mini VGA to see if it outputs a signal extenally. The videocard is onboard the logicboard....so, that is one way to process of eliminate.
Also, if you start the machine after the apple chime, hold down the OPTION key. This will prompt you as to which bootable volume to boot from. What this does though, is gives the monitor a signal before the operating system loads.....this usually eliminates the issue being software, but very seldom is no display a software issue.....