I've been having this problem
where my computer will hang a few minutes after startup, no mouse or keyboard input will be accepted, so I finally got around to the event viewr and everytime a crash occurs it was always preceded by this
The driver \Driver\WUDFRd failed to load for the device WpdBusEnumRoot\UMB\2&37c186b&1&STORAGE#VOLUME#_??_USBSTOR#DISK&VEN_GENERIC&PROD_MINI_SD_READER&REV_1.06#7&29D2AFC&0&058F63776378&4#.
fix please ?
Specs:
Gateway DX4320
AMD Radeon HD 6670
Windows 7 premium 64bit
6gb RAM
AMD Phenom(tm) II x4 820 Processor 2.8gz