Hello, I'm new to smartphones and to forums...I'm not even sure if I'm at the right place to ask this question. I just got an HTC Sensation 4G, since I got it I keep gettign a notification to install system software update, but when i click "ok" to accept the update my phone gets stock with a black screen, it has the little android guy in the middle with a blue triangle and a yellow ! exclamation point. I let the phone seat like that for a while thinkign that is gonna do something, but nothing for hours on end, so I have to remove battery for a few minutes then put it back in to get it to tun on. Can someone tell me how to fix this? or what the problem may be? Thanks in advance for your help Analia.