I am facing a weird error on my acer travelmate5742g. It is giving a beep while starting up and gets struck on STarting windoe=ws screen. I have windows 7 home premium on my system. When i press ALt+Ctrl, the sound stops and desktop is loaded. But i face yet another problem that the mouse stops wrking. I have triesd this with Laptop's mousepad as well as Microsoft wireless mouse. Now, if i have to move the mouse, i need to press Alt++ctrl everytime. Can u provide me any suggestion on this.