System won't shut down

I updated my computer with the following updates listed below. It will not
shut down when I go through the Start Menu, it keeps re-booting. What can I
do?


Saturday, October 30, 2004 NVIDIA Corporation multimedia software update
released on May 25 2004. Web site
Saturday, October 30, 2004 Update for Windows Media Player 9 Series
(KB837272) Saturday, October 30, 2004 Microsoft .NET Framework 1.1 Service
Pack 1
Saturday, October 30, 2004 Flaw In Windows Media Player May Allow Media
Library Access (819639)
Saturday, October 30, 2004 Security Update for Windows Journal Viewer
(KB886179)
Saturday, October 30, 2004 Critical Update for Windows Media Player Script
Commands (KB828026)
Saturday, October 30, 2004 Windows Media Player 9 Series
Saturday, October 30, 2004 DirectX 9.0c End-User Runtime
Saturday, October 30, 2004 Root Certificates Update
Saturday, October 30, 2004 Microsoft .NET Framework version 1.1
Saturday, October 30, 2004 Microsoft Windows Journal Viewer (Windows 2000)
Saturday, October 30, 2004 Recommended Update for Windows 2000 (822831)
Saturday, October 30, 2004 Update for Windows 2000 (KB820888)
Saturday, October 30, 2004 818043: Recommended Update for Windows 2000
Saturday, October 30, 2004 814078: Security Update (Microsoft Jscript version
5.6, Windows 2000, Windows XP)
Saturday, October 30, 2004 823559: Security Update for Microsoft Windows
Saturday, October 30, 2004 Q329115: Security Update (Windows 2000)
Saturday, October 30, 2004 Security Update for Windows 2000 (KB841356)
Saturday, October 30, 2004 Microsoft GDI+ Detection Tool (KB873374) Web site
Saturday, October 30, 2004 Cumulative Security Update for Outlook Express 6
SP1 (KB823353)
Saturday, October 30, 2004 Cumulative Security Update for Internet Explorer
6 Service Pack 1 (KB834707)
Saturday, October 30, 2004 Microsoft Internet Explorer 6 Service Pack 1
(Windows 2000)