Yesterday, I accidently dropped my computer, and since then I have difficulty opening up more than 1 window at a time. I have an asus G50 Laptop, that I put Windows 7 on. It has current drivers, and has worked fine for the past 6 months I've had it. I have 4gb of Ram, a 7200 HD with 500g of space. Any help would be appreciated. I'm not sure what it is, but since I dropped it, I imagine that the problem is a hardware issue. Thanks in advance.

It needs to be inspected to ensure nothing inside (like RAM or the CPU fan assembly) was knocked loose, or broken. Being a notebook, unless you are comfortable disassembling electronics, I would take it to a shop. If you are going to do it yourself, make sure you remove the battery first.