External monitor cannot stop moving

You can use a VGA cable to connect the VGA out port of your laptop to externel monitor.


If your Laptop and Monitor has HDMI port, you may use that.

Bonnin, Can you see a faint image on the screen? Have you tried to hookup an external monitor?
IF you can see a faint image on the screen, and a normal image on the external monitor, you have a bad power inverter (for the lcd screen) or a bad back light (in the lcd screen).
Take laptop to a shop to have them verify.
Hope this helps.

Hi,
Check which video out connector your mac has (there have been a few in the last gew years) and then buy the appropriate adaptor from the apple store. (or ebay) This will give you a standard VGA connector that you can then connect to most monitors with a standard VGA lead.

Please refer to the following article which outlines a detailed procedure for diagnosing & fixing this kind of problem:
http://www.fixya.com/support/r6430776-troubleshooting_laptop_power_failures

If it's so new then you'd better return it to the store and demand a replacement. This may be just a loose LCD cabling that's easily fixable, but it can also be a defective inverter. In either case, this should not happen with new laptops, and it is not your problem to fix. Ask a new laptop. Insist on it. You cannot be sure what the defect may be, and service centers usually stall or procrastinate dealing with the problem until the warranty is out. Then they tell you what really is the problem... but then you're the one picking up the bill. So don't play their game, insist for a replacement or therten that you'll start talking on facebook. That ought to do the trick. Nobody wants bad publicity.

Do you see anything at all such as the boot up logo? can you hear the HDD spining? if you can hear the HDD spining but you see nouthing try the following.
connect an external monitor. Look along the function keys and find one with a screen logo on it press fn and the appropriate F key and it will switch to the external monitor. The switching of screens is normally 3 cycles 1. external monitor on 2. both laptop screen and external monitor on 3. back to laptop screen.
If the external monitor comes on it's the screen inverter or screen at fault.
Once you have confirmed what the problem is we can move on to checking the screen wiring or a screen or inverter change.

Connect the external monitor. You should have an FN key at the bottom left hand side of the keyboard. Hold this down and press the associated F Key at the top of the keyboard, with the monitor picture. It should be F4 or F5 (a rectangle with a line on the left and right. Each time you do this you will move between laptop screen, external monitor, both and then back to the beginning.

Can you please share the Make and model of the Laptop?

look at the F keys on your laptop (F1, F2....)

find one that has a monitor picture on it. if you have one (mine is F8), hold the Fn (function) key and that F key.

that should turn the external monitor on

Hookup the laptop to an external monitor and see if you still have the same problem.