My galaxy S was working good until about a month ago when it froze and needed to reboot. Now when it boots, a screen showing a mobile phone and a computer and an exclamation mark in the middle is appearing. How can I resolve this?

My galaxy S was working good until about a month ago when it froze and needed to reboot. Now when it boots, a screen showing a mobile phone and a computer and an exclamation mark in the middle is appearing. How can I resolve this?

If your phone is stuck in recovery mode, you can try these steps to force it to boot to Android:
If none of this works, most likely it is a hardware issue and you'll need to get the phone itself looked at by a technician.