3v

Hi, I want to use those 2 pronged 3v leds in my car, however I have trouble understanding how to choose a right resistor, and also I am worried that resistor will get very hot and make a much higher power consumption. So it would help a lot if anyone can spare a little time and explain this to...

I recently built it, it was working fine until yesterday it freezed, then I tried to turn it on again, the monitor would display: no signal. Have tried removing the ram and also plugging again the gpu. I also put the cpu again and applied thermal compound again, for a moment that worked. Today I...