download and install THIS driver. The file may list Vista but it will work on 7.  Do not use the Dell download manger. Make sure you select the option to use the web browser to download the file
just installed windows 7 on my xps m1530.  everything is fine except for missing unknown drivers. in device manager, under "other devices," i have two "base system devices" which have no information to let me know which drivers to download. The location of the 1st base system device is PCI bus 3, device 9, function 2.  the location for the 2nd base system device is PCI bus 3, device 9, function 3.  the 1st base system device, under "hardware Ids" in its properties tab, the value is  PCI\VEN_1180&DEV_0843&SUBSYS_022E1028&REV_12PCI\VEN_1180&DEV_0843&SUBSYS_022E1028PCI\VEN_1180&DEV_0843&CC_088000PCI\VEN_1180&DEV_0843&CC_0880 the 2nd of the two  "base system devices" has a hardware Id of this: PCI\VEN_1180&DEV_0592&SUBSYS_022E1028&REV_12PCI\VEN_1180&DEV_0592&SUBSYS_022E1028PCI\VEN_1180&DEV_0592&CC_088000PCI\VEN_1180&DEV_0592&CC_0880 if anyone can figure out which drivers i need to install for these unknown base system devices please help me out. thanks [IMAGE][IMAGE]    
installed windows 7, now missing unknown drivers