How to safely shut down or force shut down HTC devices

HTC Hero S HTC Hero S
HTC Rhyme HTC Rhyme
HTC Raider 4G HTC Raider 4G
HTC Amaze 4G HTC Amaze 4G
HTC Explorer HTC Explorer
HTC Sensation XL HTC Sensation XL
HTC EVO Design 4G HTC EVO Design 4G
HTC Vivid HTC Vivid
HTC Rezound HTC Rezound
HTC Velocity 4G HTC Velocity 4G
HTC One V HTC One V
HTC Velocity 4G Vodafone HTC Velocity 4G Vodafone
HTC One S HTC One S
HTC One S C2 HTC One S C2
HTC One XL HTC One XL
HTC One X AT&T HTC One X AT&T
HTC One X HTC One X
HTC One XC HTC One XC
HTC Evo 4G LTE HTC Evo 4G LTE
HTC DROID Incredible 4G LTE HTC DROID Incredible 4G LTE