[HD2 General] Emilio Nataren:
Hello everybody!

I am new on HTC products and I got by first my HTC HD2, wich had the same freezing and turning off problems that usually a lot of HD2's users have.

But I managed to fix my problem and I joined XDA dev. to share this with other people who might find this useful.

PS. I don't know if some of this steps are not involved on the solution but I'll put them all to make sure the same process I did for fixing it happens.

First I updated the ROM version, I would recomendto use only official roms, either the HTC HD2 normal version, or the HTC HD2 T-Mobile version, wich they both are free on their web pages. PLEASE DO NOT MIX THE ROMS, DON'T INSTALL THE T-MOBILE VERSION ON THE OTHER HD2 TYPE OR THE HD2 NORMAL VERSION ROM ON THE T-MOBILE ONE.

since it might overheat and freeze during the actualization, select "not charge the phone when it's on" or something like that on the configs. for not to overheat the phone, plus, I putted a small CPU fan near the phone to make sure it doesn't overheat during the process (with the back cover off).

Then, after the actualization, turn the phone off... let it cool off for 10 mins, or 5 if you are using a fan to help the cooling....

when it's on, go to the screen config, disable the auto-brightness, and put it manually in 20% wich seems good enough ilumination for the screen and doesn't overheat's it.

then, only if you don't need it, disable the GPS servise, wich forces the overheating too...

Once done this, install the program CleanRam, wich is free and only have to pass the .cab file to the phone and run it from there. Then, look for the program on the start menu, enter the CleanRam config Program, tap menu, tap backup/restore, tap select settings, tap htc hd 2. done.

Now go to the Start, tap settings, tap menu, all settings, tap today, tap items, then dissable HTC Sense and enable Windows Default. Then Ok.

Now you have the default Windows appearance.

Let your phone cool off... when it's cold again. Run the CleanRam. Now you will have a period of time (1 day to be sure) that you will do only basic stuff with your phone (take pics, no vid!, call, send sms, listen to music (windows media player only!) and other basic stuff. REMEMBER! everytime you close an aplication, go to the task manager and end the program from there.

WARNING: Make sure to run the CleanRam at least each 5 or 10 mins when using the phone. And make sure to turn the screen off evertime end changin to the song u wanted or things like that.

After 24 to 30 hours of this "Pasive User Mode" wich I call xD.... go to configs again, menu, all settings, today, enable HTC Sense again. Ok.

Now you have the HTC Sense Appearance again. Wait 20 secs.... Run CleanRam. Now wait for your phone to cool off......

Now turn it off...... wait 3 mins. Turn it on, run CleanRam.....

Done! It's working fine, and it would not freeze or turn off... it will heat a little but as usual.

Always remember to keep on ending programs with task manager when not using them and running CleanRam when you the phone has worked too much lately.... Hope it works for you... it did for me... and my HTC HD2 is working as better than ever! :D