Acer Aspire 1600 Series
Here is a link that explains you how to disassemble an Acer Aspire 1650. It also applies to the following boxes: 1640, 1650, 1680, 1690, 3000, 3630, 5000, 5510, Travelmate 4000. There are certainly others who have the same box.
Read it thoroughly before you begin.
Click on the picture
Good work !