[AC Question]

It being like this since morning

It's sayingOdin mode

[Guitar1238751]

Hey, it looks like you might be in download mode. If there is no bar on the screen showing that something is downloading via Odin then try this. Press and hold the home button and the sleep/power button until the device restarts. That should get you out of download mode and back to using your device normally.

[Guitar1238751]

And make sure Odin was not in the middle of installing/flashing something on to your device. Doing this may brick your device rendering it unusable. As long as it is a soft brick then you will have to install the stock rom once again via Kies

[shel692]

Did you receive any notifications of an update to install? If so I'd charge it a few hours and see what happens. If not then it sounds like your OS failed. Provided you have a USB cord and a computer you should be able to fix it via Kies.

[Rukbat]

Or you accidentally put it into download mode. Hold the power button down until it restarts.