Help Samsung galaxy SII GT- I9100G

[khush]

Samsung galaxy SII GT- I9100G
automatic it has taken upgradation from JB after updating it asked for install i clicked ok after this that Android logo came and installation started I dnt know it stopped and now on screen only brand name is written "Samsung galaxy SII GT- I9100G" neither it is getting switched ON nor OFF I've taken out battery bt no use.Pls help....

 

[Rukbat]

Take it to Samsung (or to the store you bought it from), and hope they don't blame you for their screw-up. (That seems to be their usual answer to a bad upgrade these days - "you'll have to pay to get it fixed".)