Samsung UN55HU7200FXZA. Black screen. When turn on,Verticals white & black lines, and after 2 seconds goes black (no video).

Return it if it's only a few weeks old for a different set.

The device sources and the inputs have not been set to the correct mod.There could be a problem with the TV it's self for it to be turning off like a problem with the power supply for the TV.

Turn the TV off and unplug it from the wall and also unplug everything that is connected to your TV for about 1 minute and plug everything back in again. There could some thing wrong with the power supply or a problem with the t conn board here.

Cheaper to replace the TV than repair this problem.

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Before you start, turn off the breaker to the wires you are working on.
You should have two 16-2 wires going to your switch, one is the feed, the other will be the line that goes to the light. Put black feed wire onto bottom screw of switch (or top, always be consistent) Put other black from the second wire to the second screw on the switch, this will be your line to the lights with power when switched on. Connect white to white in switch box. The power will come back through the white from the line wire.
Up at the light, make sure you have the 16-2 line wire from the switch, connect the black line from the switch to the two thin black wires from the two bulbs. twist together and put a Marr connector on them. You now have power to the bulbs, the power must come back through the white line 16-2 wire that is in the same sheath from the switch. Connect this white line wire to the two thin bulb wires, twist and Marr them.
Now, you have 2 other 16-2 wires to the octogon light box. My guess is that one is the feed from elsewhere and one is the line to the switch, is that right? Do not connect either of these to the bulbs or else you will bypass the switch.
Below is a diagram but only one bulb, your black line from the switch needs to be marr connected to two blacks, one from each bulb. Remember to connect the bare ground wires together and to the metal box.

Hey there,

Here are a couple guides that show how to create a hotspot on an Android device:

How to turn your smartphone into Wi Fi hotspot

How to Turn Your Android Phone Into WiFi Hotspot

If for some reason your phone doesn't have any options for using it, there's this app you might have some luck with:

FoxFi WiFi Tether Root Android Apps on Google Play

Prior to the Windows splash screen do you see graphical issues ( black background, white writing, or bios splash screen) if you don't then the problem is with windows and will need to be reinstalled. Samsung ship laptops with a windows cd and is a fairly basic wizard. If you don't know how to do this google is full of guides. If you however see graphical problems right from turning the laptop on then there is likely to be a hardware fault straight from the factory. Contact Samsung and they will repair / replace the laptop through warranty. I have seen several Samsung laptops brand new from the box do this and It turned out to be a hardware issue and was replaced on warranty. Good luck.

Replace the medieval TV.

Common problem of a bad lamp call your local repair shop on price and availability of lamp.