First of all, do you have a custom recovery? If you hold the power switch and volume down button until it reboots, you should get onto the bootloader screen. If there's an option for recovery enter it using the volume/power button, then wipe the dalvik cache in cwm/twrp. To be honest, until you give us an idea what has been done to the phone(unlocked bootloader/rooted or not, custom rom/recovery/kernel, etc) there's not much can be done. The files you mention could be the RUU for the phone, but without knowing your HBOOT or carrier you're likely to have the wrong RUU.