Xperia z4 tablet not powering up

[VivR]

Hi I love my Sony Z4 Tablet  but after being on charge it is no longer turning on although there is a blue light flashing continuously. I expect I'll have to (try) to take the sim card out?

Has anyone else had this problem?

[Uliwooly]

@VR1

run XC on your computer and see if its recognized 

XC >>> Xperia Companion