Need help my HTC EVO s touch input not work.

My phone is sliped from my hand and fall down on the floor in screen side.
I picked up and the phone work fine.

But after sometime its screen stop working.

Sometime work sometime not.

It's screen problem or my device software.

I have miui stable ics Rom.

Thanks to all member for there suggestions and help.

I know you help as you can .