Annoying Standby - KD49X8005C

[N3xT27]

Hi Guys!

Is there any way to turn stand by off? 

I used to leave my HDD or Pendrive connected to the TV when I watch some movies at night and every time I wake up my pendrive is warm like it was working all night long. Or my HDD randomly spins up and down during the night and it is so annoying!!

Other thing is that I have (had...) my TV connected to my PC with HDMI and of course I don't want to use it as a monitor all the time, because I have a PC-monitor on my desk so I just turn it off. But because my PC is connected to the TV and the TV is in standby mode (turned off) it randomly gives a signal to my PC and my PC freezes for 1-2 sec and says "new deviec is connected" than "device disconnected". My solution was to plug and unplug the HDMI every time I want to project something to the TV from the PC, or unplug it from the ~230AC.. SOOO ANNOYING! Paid a lot of money for a smart TV and it has so many problems, not just these..

Thank you for your answers!