You say you tried going “cold turkey” but did you keep the TV/s in the house? If you did, that’s too much of a temptation.
I assume from the goal, “turn off the TV” that you want to stop watching TV altogether, in which case, you simply should toss out the TV. Don’t just move it out; smash it with a bat. If you live in an apartment complex, toss it in the dumpster.
Realize that deciding to only limit your TV watching time will be much more difficult. The best way to do this is to decide a set amount of time you will watch TV each day, and watch no more than that.
Remember, you can always move in increments. Maybe scale your TV watching by only 30 mins, and continue on. Just make sure to constantly measure how much TV you watch and stay on track.
The laptop is a similar situation. If you have a library card, many places will let you use their computer with the additional benefit of only allowing you to use it for an hour. Maybe you could toss out your laptop too?
If you don’t toss out your laptop, the methodology is similar.
If you want any advice or support, just email me at middens.is.hott@gmail.com
Good luck :D