Raspberry Pi Forums

Hello there;

After Installing the Raspbian Jessie, I have encountered boot up problem in such a way that I have to plug and unplug several times until I see the red light blinks for the second time (it usually takes 5 - 40 seconds) to boot up rpi OS. Do you thing that it is the same for everyone? Or, I need to recheck/ change something on any part of the system?
PSU: 5V, 2A, Syrox
PSU Cable: Syrox and also my original Samsung cellphone cable
Micro SD cards:
- Toshiba 32 GB class 10
- Kodak16 GB class 10
- Kodak 8 GB class 10

If the red-light blinks then your power supply isn't up to the job. That's a low voltage indicator (like the rainbow square in the top right corner of the display).

Try a better phone charger, try a better cable between your charger and the RPi. Or buy a new "official" power supply.