Hangs on splash screen :(

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My phone hung this morningso I poked the hole at the back and asumed the soft reset would work OK.
After lunch I looked and found it on the splash screen.
I have tried leaving the battery out and removing the memory card
but still no joy. It starts up, I get the HTC splash screen with red writing with ROM details (PK3.0) the red writing goes leaving just the splash screen and thats it.
The power light (round the joystick) does NOT come on at all - even with the power lead plugged in, unless I remove the battery - in which case it comes on solid red.
Holding the power button does not turn the device off.
Taking the battery out to turn off then putting battery in and connecting charger has resulted in an orange charge light but if I turn on the device the charge light goes off.
Any ideas?

My only idea is the same old story... try hard resetting the device. Volume slider DOWN and soft reset hole