I opened my 'acer aspire 722' after two months. Just after opening the desktop, multiple folders comes one after another named 'search result' without any user's command. Also the mouse pad tapping ( double click, single click) is not responding but the right and left click buttons are OK. Also, whenever I open a page, it goes to the end of the page just like I have scroll down automatically obviously without my command.. what is going on with this computer. Can you help me?

Too many possible causes to be able to diagnose. To start it's possible your keyboard is defective, do you have another known good one to replace as a troubleshooting step?