About a week ago my phone started acting up. I can open an app and use it for a while, but after I close the app and let the screen lock, the next time I try to use it nothing will open and I have to restart my phone. If I only use the call or text buttons it's fine. I thought installing a software update would help, but it has just made the problem worse. Now my phone won't start at all! When I press the power button it will load to the first HTC screen, but won't go any further. It stays stuck on that screen unless I turn on the bootloader to power down the phone or until the battery dies. I have no idea how to fix this problem! Also I have gone to the bootloader screen and tried to do recovery and a factory reset, but all that does is take it back to the HTC screen.