mobile

Good Morning everyone. I am new to Android Central. I have never had any issues with my G3 prior to yesterday. I was using the phone all day no issues and then suddenly I went to press the power button to check my email and barn it rebooted so I thought it was just a random crash and was ready to move on. When it came back up (restarted) initially I was able to access it. Once the screen dimmed and turned off I tried to press the power button to turn it back on and it vibrated and rebooted again. I tried removing the battery for a couple minutes places it back in and then trying again. Same result. I removed the case and the back panel and noticed that simply putting my finger anywhere near the power button even on the black plastic near it caused it to be activated. Most of the time by the time it reboot it shuts back down. There was a couple times I was able to keep it running. Now being one of those. I backed up my files and did some reading but wanted to get some feedback specific to my situation. Any help would be wonderful and please let me know if you need more information I would be happy to provide.