Acer 5610z factory settings

I recently seperated the hard drive partition on teh Aspire 5610z which helped greatly with the speed of the computer but I did not have the factory disk that came with the computer. The person who did the work did a great job of making the computer functional but it does not have the acer particulars (like the pop up at the bottom of the screen for computer management) and now the display is very dark and I can not figure out how to make it brighter. That used to be in teh acer box and at the bottom start up menu. Would appreciate your advice.