A possible answer
After some researching i found this in one of the forums of HTC
Display Not Working on the HTC Surround
Black/Blank Screen
Verify that the battery is properly installed in the device.
Attempt to power the device on by pressing and holding the power button for 3 seconds.
If the device won’t power on (also indicated by no LED’s) attempt to charge the device. If there is no response from the device when attached to a charger and power source, treat the issue as a Power/charging issue.
If the device will or is powered on:
Verify that the device is not in hibernate mode by pressing the Power Button once.
Once you have verified that the device is not in hibernate mode, attempt to navigate the device by using the Hardware buttons.
If the display is still black/blank, Soft Reset the device by powering it off and removing the battery for 10 seconds and then reinsert and Power the device back on.
If the screen is still black/blank after the Soft Reset, you will need to perform a Hard Reset.
The hard reset will remove all of the customers’ data and settings and restore the device back to the state that it was in out of the box. Once the Hard Reset is done, the customers’ settings and data CANNOT be recovered. If possible, have the customer back up their data before proceeding with the Hard Reset.
Once the Hard Reset is complete, retest the device.
If the screen is still black/blank, the device will need to be replaced/repaired.
Screen has lines
Is the customer using a custom picture or image as their wallpaper?
Return the Wallpaper settings to one of the defaults on the device by going to Start>All Applications Arrow>Settings>Lock & Wallpaper>Change wallpaper
Is the issue seen when using the default wallpaper on the device?
If so, Soft Reset the device.
If not, advise the customer that the issue is with their custom wallpaper selection and recommend that they discontinue use of it.
Does the issue remain after completing the Soft Reset?
If so, rule out recent 3rd party applications that might have affected it, by removing them
Start>All Applications Arrow>Touch and Hold on an application to be removed and select Uninstall from the Pop-up menu.
Note: Not all applications can be uninstalled from the device.
Once all recent applications have been removed, power cycle the device and retest.
Is the issue seen after removing recent 3rd party applications and performing the Soft Reset?
If so, perform a Hard Reset.
The hard reset will remove all of the customers’ data and settings and restore the device back to the state that it was in out of the box. Once the Hard Reset is done, the customers’ settings and data CANNOT be recovered. If possible, have the customer back up their data before proceeding with the Hard Reset.
Once the Hard Reset and retest the device.
If the issue remains, the device will need to be replaced/repaired.
Unresponsive Touch Screen
Note: The device comes with a Capacitive Touch screen which will not respond to light touches from anything other than the flesh of the finger. Users trying to use their fingernails or any other object should be advised that they need to use the flesh of their fingers (firmly) to navigate the Touch Screen.
Verify that the issue is with the Touch Screen and not the device freezing by attempting to navigate the device using the hardware keys.
If you can navigate the device using the Hardware buttons, continue.
If you cannot navigate the device using the Hardware buttons, this issue needs to be worked using the troubleshooting flow for Device Freeze.
Check the device for a static cling screen protector, if present, remove and retest.
If the issue remains, Soft Reset the device.
Check the device for a carrying case with a magnetic closure; some magnets can interfere with the Touch Screen responsiveness.
If using one of these cases, have the user remove the device from the case and retest.
Ensure that the Charger/Data Cable is the one intended for the device by HTC.
Use of non OEM chargers/data cables can cause your screen to become unresponsive (due to the power being allocated to charging the task, and not the screen).
HTC can only guarantee items such as chargers that have been made, made for and certified by HTC. Our chargers have been tested and passed strenuous quality and safety regulations, and it is recommended you only use HTC chargers with your phone. You must be very careful when using electrical appliances; using products that have not been tested properly or that have not been tested at all could cause your phone to malfunction, or even in extreme cases, could injure you.
If the issue is not resolved by the previous steps, move forward with the Hard Reset.
The hard reset will remove all of the customers’ data and settings and restore the device back to the state that it was in out of the box. Once the Hard Reset is done, the customers’ settings and data CANNOT be recovered. If possible, have the customer back up their data before proceeding with the Hard Reset.
Once the Hard Reset and Customization process have completed, retest the device.
If the issue remains, the device will need to be replaced/repaired.
Hope someone can give us a better answer, but this is the best at the moment
UPDATE:
People if you want to fix your Phone just put this on the serch engine of XDA Developers "To solve the problem "Screen unresponsive" or "Frozen screen" by yourself", without the brackets.
The post is from "maybeture", and he say is working, if you read the replies, many people said it work
I'll do it to tell you
Tell me If you have luck
