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Measure the voltage at end that plugs into laptop. If it matches what's on the label on bottom of puter case then the problem is in the power jack on laptop. Common problem; Cord gets yanked around and jack becomes unsoldered from motherboard. If you get a LED to liteup on puter when you plug in the charger and there is no light at all on screen, then change the memory chips.
Unplug the computer and wait for a few seconds. Plug it in again and press the power button. If this doesn't work, you will need to take it to a service agent as it won't be user repairable.
If the problem is same with different input devices and you have ensured there are no loose contacts in power outlet, RC jack, cable and sockets, the TV needs servicing.
It sounds that, the memory IC to your TV has damaged. This IC can be located very near to main system control IC. A very small one, with 8 solder terminals. Even though it is very small, function of it while the TV works is great. The work is a semi-skilled one, and you must have some knowledge in electronics to proceed.
Go to napa and they have the connectors that plug in to your existing wire connection, I don't know if they have the one for yours, but it won't hurt to check, you don't have to cut or splice the wireing with there trailer connectors, plug it in and done.
Laptops are so integrated that usually a system failure that involves power issues such as in your case where you cant get it turn on with anything on the screen mean the mainboard (motherboard) is damaged. This usually leads to buying a new laptop or paying for the board to be replaced which usually costs as much as the laptop.
Sounds like there is a problem with the power supply. Try unplugging the T.V. and hold the power button for 30 seconds. Plug the T.V. back in and see if that helps. If it doesn't try switching to another outlet, and if that doesn't work then you may need to replace the power supply which would probably cost anywhere from 140 to 200 for one.
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