i noticed that if i remove the cable 3 times, it starts.... it seems that i should remove always 3 times...

i tried as you wrote but the problems is the same. I removed the cable 3 times and then i turned on... I don't know why...

i can understand what's the problem...

So should i overclock a little bit or downclock a little be?

I have the problem with RASPBMC... I can shutdown or reboot with terminal or with the button... i've always the same problem... It doesn't boot immediatly but i have to remove the cable at least 2 times..

HI! thanks for the reply.
i think i expressed myself badly..
When the Pi doesn't boot i remove the cable...the if it boot there's no problem and it don't tell me that i shutdown incorretly...

Hi! i Have some problems when the PI is booting. if i restart it, twice on three it doesn't start.
The third one it starts.

While is booting only the red light is on.

When the pi start i do nothing particular, simply i remove the cable but the power outlet is always the same.

Someone can help me?