X51-R2, A10 bios update, Stuck on F2 or F12?

OK I thought it was a good idea to upgrade my bios from A?? to A10.  But I was wrong. I thought dell official drive will not kill me. But clearly I was wrong. After the upgrade it ask me to reboot. After reboot I got taken to new a10 bios loading screen with two options; F2 setup and the F12 boot option. Then everything stops. Pressing F2 or F12 will light up the option but nothing changes. Help please I don't know what to do now.