You've got a laptop with touchscreen functionality, but you're having problems with it and want to get it fixed.
First of all, you need to identify what the problem is. Touchscreens are generally made up of two screens, one displaying the image and colors, the other transmitting to your computer the inputs controlled by your finger or stylus. So, if the image is faulty, it's the LCD screen that needs changing. If it's the touch controls that are at fault, then logically it's the touch-sensitive glass. Depending on the model, it may be necessary to purchase the complete module with screen and touchscreen.