Apple Tv does not start up anymore

After 2 weeks of holidays, I wanted to start up my Apple TV again and it dos not start up again.

During my holidays the power was off.

The Apple Tv shows only the Apple logo and light keep on blinking.

I have tried a lot of procedure found on the internet but no one is solving the problem

• Tried to restart again
• Tried other TV
• connect to iTunes
• ...

Can someone help me.

Thanks in advance.