I'm trying to install a new T520 (4243-4XG) with Windows XP SP3 (fully patched).
One small problem: The WinXP-driver for the nvidia graphics-adapter (83da16ww.exe) doesn't work... I get the error message "no compatible device found. I also tried the newest driver from nvidia, same error...
Windows XP does not support the Optimus GPU technology, so you will need to disable Optimus in BIOS by choosing either the integrated HD3000 chip or the discrete NVS4200M chip.