shut down problems

Clarifications

What operating system are you running first of all? And are those options even present on your shutdown menu, or do they just perform undesired actions? Give us a little more info to work with, please.

Windows XP restarts unexpectedly or restarts when you shut down the computer

http://support.microsoft.com/kb/320299/

Advanced troubleshooting for shutdown problems in Windows XP

http://support.microsoft.com/kb/308029

Click Start, Run type regedt32 and press Enter. In the Registry Editor, navigate to these two keys and change the values:

HKEY_CURRENT_USER\CONTROL PANEL\DESKTOP. Double-click AutoEndTasks in the right panel, type a 1 in the Value Data field, and click OK. Close Registry Editor and restart your machine. Now when you shut down your computer, WinXP can close any applications that hang, and it will do so without any further input from you during the process.

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon
Set the value of PowerDownAfterShutdown to 1.

If the value isn't present, add it by creating the string value PowerDownAfterShutdown and setting the value to 1.

Note: A damaged or insufficiently charged internal battery can corrupt CMOS or BIOS settings.