HTC Wildfire won't boot
Basically something wrong and bad happened and hence your phone is unable to boot.  I am not sure this is the answer, but I am just trying to help as I too faced such problem and was in panic during initial days with Android.

This XDA site beautifully explains the boot related problems and how you could get over.  Basically you have to reflash the ROM for which you need few USB drivers + flashing tool and original or some other ROM.  Though I am unable to point you to exactly to sites that provide these, I guess you can easily search for it.

TIP: Had if your phone Clockworkmod recovery, things will be bit easy. This is one convincing reason, I made up my mind to root and install CWM recovery as a first step on all my devices.