After a year of working flawlessly on CM7, my htc desire Z suddently won't pass the boot screen. Heres the complete situation. This is my older phone, I used to open it to compare stuff or look at how older apps were doing on this. But suddently, out of no where, I tried booting it but it's stuck on the CM7 boot screen. I tried to open phone by pressing volume down and power to go into the settings, I can't use any of them. I can enter settings but when ever i press something (clockwork recoveru mode) it gives me an empty black screen with clockwork logo. What can I do?