Nexus 10 won't turn on even after flash new factory image [Root only]

Hi,
I can't manage to make it work!!
I have tried boot into recovery mode and wipe data, cache. Nothing happened. I used this guide to flash a new factory image.. Everything went ok but when i rebooted.... again google screen only this time had a lock on the bottom..
I should mention that the device is now rooted(it wasn't)..
The google screen though only flashes for 3 seconds and then it turns off. I can boot into bootloader and fastboot.
Any help would be appreciated..

 

Hi!
Thank you for your answer.
I have already tried that but I can't manage to confirm the drivers. I downloaded them installed them but when I check them it says there are no drivers installed.

 

Yes of course it was the first thing I did. Nothing changed

 

Thank you!! I'll try that and I'll write back..

 

I managed somehow to pass the google screen and see the nexus logo but I waited and waited over half an hour.. nothing happened. so I tried to flash the bootloader which until then was working without ever have any problem, except now it doesn't do anything. The device doesn't open in any mode. The buttons doesn't work.. nothing... the screen just shows a full battery icon with a flashlight inside.. i burned it didn't i?

 

I resurrected it when I plugged it into power to charge it!
So I'm back at first stage...
Wonderful!!