Save it to a new folder on the desktop, extract it's contents (Right-click, point to 7-zip--Extract files). Go into the device manager, look for stuff that has exclamation points, use the device manager and point to each of the six folders (the ones you just extracted) and see if Windows finds a suitable driver. (one of the folders is for Nvidia memory controllers).
I'm assuming this computer is getting connected, if not use another PC, download 7-zip and the above file and burn a CD.
Whether or not this works, look for anything labeled USB in the Device Manager, and choose Uninstall, Reboot, Go into the BIOS Setting and see if you can disable USB 2.0. Reboot see if things work better.
I understand this may not work, but it's worth a shot.
Edit: You may want to look for something like 'PCI Standard RAM Controller' in the device manager and even if it says it's working properly see if the INF in the MemCtl folder will update it.
Further Edit: This is old, but may provide some clues:
Edited by Steven W, 26 June 2011 - 08:16 PM.