|If you have dropped the laptop, or have subjected it to some other physical trauma, or have spilled liquid on it, or have exposed it to liquid, e.g. rain, those things are the most frequent reasons a laptop is damaged such that it cannot work normally, and usually you must replace something before it can work again. In that case, take it to a laptop repair place and get an estimate of what it would cost to at least get the needed parts. |
Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.
See response 1:
DO NOT plug in or unplug a monitor's video cable into / from a video port while the computer is running. Doing so can damage the monitor's circuits and/or the video adapter's circuits.
Some laptops will display on an external monitor without you having to do anything.
If you get no video on an external monitor, some laptops have a key combo that you must press to toggle the display to external video only / sometimes both / built in display video only - see the Owner's or User's manual for the model.