Help Note II won't boot at all

[Souris]

I have a Note II phone that worked fine. It's a backup phone that I used for a while and then put away until now. I want to start using it again, so I attempted booting it but it was frozen at the Samsung screen. I then tried pressing menu, power, and the volume and I selected to clear the cache. Since then it hasn't responded to anything, even when I attempted to power it on with a different battery. Is it completely useless now?

 

[jdmc]

Clearing the cache doesn't matter much. Is there any data stored on the phone that you don't want to lose? Has it ever been rooted, or had custom firmware or a custom recovery installed? Do you know how to install a custom recovery or firmware?

 

[BCB7074]

I have the same issue as Souris but my phone is being supported by a carrier. I tried to boot stays stuck in Samsung screen. I tried wipe and restore ,didn't work I now have it stuck in a screen that says :
Manuel Mode
Now send the package you want to apply to the device with adb sideload <filename>....
what does this mean ?
I just want ot be able to use this device to play games on.
Also It will only turn on or off by removing the battery.
thanks if you can advise.