|just a coincidence|
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 / built in display video only / sometimes both - see the Owner's or User's manual for the model.
Your cpu may be overheating to the point that the mboard shuts off automatically when you play the game. In that case, the computer will not start up all the way after that until the CPU has cooled to below some temp
The fan inside the case should spin occasionally. If it doesn't spin at all at any time, you must replace it.
Don't obstruct the openings on the sides and bottom of the laptop where the air is supposed to go into and out of the case. E.g. don't use it in bed unless you have it on something flat.