ThinkPad T431s exhibits five short beeps followed by five short beeps upon operating system restart

TITLE:
ThinkPad T431s exhibits five short beeps followed by five short beeps upon operating system restart

SYMPTOM:
The ThinkPad T431s system will exhibit beep codes (five short beeps followed by five short beeps) upon restart of the Microsoft Windows 8 operating system. The system will exhibit no video on the LCD during the post beeps, but then continue to boot successfully. The operating system completes booting into Microsoft Windows 8 without any further errors.

AFFECTED CONFIGURATIONS:
ThinkPad

AFFECTED SYSTEMS:
ThinkPad T431s (Machine Types 20AA, 20AC; but not limited to these models)

SYSTEM IS CONFIGURED WITH:
Microsoft Windows 8 Lenovo preload

OPERATING SYSTEMS:
Microsoft Windows 8 Pro
Microsoft Windows 8

SOLUTION:
Lenovo is aware of this issue and is currently investigating a resolution.
No hardware replacement is recommended at this time. In some instances, if the system is powered off completely, the beep codes will not return.

Follow the steps below to completely shutdown the system:

1) Type “CMD” at the Windows 8 Start screen.
2) The Windows desktop will open with a command prompt.
3) Type “shutdown –s –t 9” in the command prompt window and press
Enter.
4) Allow the system to remain off for about five minutes.
5) Power the system back on and check for post beep returns.

NOTE: The user should refer back to this document for any updates of new information.

To resolve this issue, update to BIOS version 1.07 from the Windows or the CD ISO image utility at the following URLs:

Windows utility:

http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS034505

CD ISO image:

http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS034506