1)Did you update the right OS version?
When you boot up the virus, a "T" or "S" will be displayed in the right upper corner of the display. There is a difference in software versions!!! One for T
and one for S!
2)Maybe the LCD contrast went to a wrong value. In that case the virus shows you the OS version and following the logo and after that the display goes blank.
If you do not have the possibility to send a correct LCD contrast value,
you can download a 30 days trial version of my editor "Supervirus" from:
www.solard3d-software.com
Within the Global page of this editor you can send the right one.