I tried to do a hard reset on an HTC phone but when I get comes up this play all it shows is like reboot and reboot to downloader it doesn't say anyting about hard factory reset

SOURCE: Hard reset for a HTC TyTn

There are two ways:

1.
Press and hold the two soft keys (the ones with dashes on) and at the same time insert the stylus in the soft reset hole. All three things need to be done together and a warning will appear. (it is a bit fiddly)

2
Go to Start>Settings>System (Tab)>Clear Storage (Icon)

Mike

SOURCE: Hard reset for a HTC Touch Diamond

I find certain voodoo rituals to do the trick. Especially those derived from rites originating in the southern gulf coast region. To start, build a low, hot burning fire pit surrounded by granitic stones roughly the size of oranges. Be sure you have a light bed of gravel beneath the fire itself to allow air space for the spirits to commune before entering the fire and your device. Use eucalyptus logs ages approximately 2 months for the fire itself, and sprinkle a solution of pulverized bat wings soaked in winter menstrual blood from a one year old goat. Wave your Diamond over the fire vigorously while chanting the names of all three major thorn gods repeatedly. That should do the trick.

SOURCE: How do I reset my htc 8925?

Press and hold both soft-keys [they look like minus signs] while putting a paper-clip or something in the reset hole located near the usb port.

SOURCE: hard reset for htc s630

Turn it off, and hold pressed both soft key and turn it on, i will give option to hard reset. Good luck

SOURCE: want to factory reset an unlocked htc touch cdma (vogue)

All you have to do is... hold down the (RED) End button and the (GREEN) Send button at the same time, and while still holding them down POKE your stylus in the soft reset hole at the bottom of phone.
Soft Reset button is located to the right of the mini USB charging port, assuming the phone's screen is facing you.
Confirm you want to Format and Done!
P.S. Sometimes if you don't hold the Green and Red buttons hard enough they tend to unclick and reclick if you don't apply Firm and even pressure. Also if you still have trouble make sure the phone is in the BOOTING cycle when you attempt this.