Anybody know where I can find drivers and upgrades for an ASUS K501 laptop? The SN is worn off, so I don't know which version of the K501 it is, but it's a 15" with a dual core, 4GB of soldered-in RAM, plastic case. I'm trying to see if there's a BIOS update that'll allow me to ADD ram to it. I put in a 2GB stick, and it just defaults to that, skipping the 4gb already hardwired into it, rather than giving me 6GB, it gives me just the 2GB.