When you start a Windows Vista-based computer, you may receive a Stop 0×50 error message that resembles the following:

*** STOP: 0×00000050 (parameter1, parameter2, parameter3, parameter4)
PAGE_FAULT_IN_NONPAGED_AREA

This problem occurs on a computer that has the following hardware installed:

• A card bus adapter
• A storage device that is inserted into the card bus adapter
  The storage device might be one of the following:
  • A secure digital (SD) card
  • A compact flash (CF) card
  • An external Serial Advanced Technology Attachment (eSATA) hard disk drive that is running in SATA Advanced Host Controller Interface (AHCI) mode