Android 5.0 on boot or plug get shell - startup.nsh

[JKarhani]

Hello,
please I was trying to boot my device, after using flashboot commands on my tab intel with android 5.0- it was ok. Then I tried the same procedures while trying to keep the data on it, I got the password of android then reset the device, so I tried & I tried. the last thing, is now it's giving on boot this screen with null (startup.nsh) as shown in the picture. enter image description here the cpu type is as follow: intel - x5468273 - sr1ub