You may experience the following problems on a Windows Vista-based computer that is using an NVIDIA nForce 430/410 (also known as MCP 51) Southbridge chipset:

• When you start the computer, no operating system is found. Additionally, you may receive an error message that resembles the following:
  

  No Operating System (OS) Found

  This problem may occur even though the computer has been operating correctly for some time. For example, the computer may have been operating for hours, for days, or for weeks. When you examine the NTFS file system boot sector, the NTFS boot record may have been moved by a multiple of 4 bytes.

• Random data corruption may affect any files on the computer.