I've experiencing some issues when boot my PC and shutting it down.Please see below issues I've seen.

- When i press shutdown button or select start - > shutdown the machine is get hanged on "Windows is shutting down" screen. The problem is happens each and every time i'm trying to shutdown the machine. Even after 2-3 hours machine remains same without shut it down.

- When I switch on the CPU, first time machine is get hanged on "BIOS" screen.

- Then I press the power button to down the machine and again switch on the CPU. Only the second time machine is booting up correctly.

I'm experiencing these issues from couple of weeks. I repaired my Win XP SP2 OS but problem is remains as same.

Please see my machine configuration :

System Information
Time of this report: 5/30/2010, 00:27:53
Machine name: HOME
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_rtm.040803-2158)
Language: English (Regional Setting: English)
System Manufacturer: INTEL
System Model: DG31PR
BIOS: BIOS Date: 03/13/08 17:38:29 Ver: 08.00.10
Processor: Intel® Core™2 Duo CPU E7300 @ 2.66GHz (2 CPUs)
Memory: 2036MB RAM
Page File: 994MB used, 2934MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.2180 32bit Unicode
DxDiag Previously: Crashed in system information (stage 4)

Any help highly appreciate.