Windows XP Pro shut down problem

[Guest]

Tonight when I went to shut down my computer it would reboot instead of
shutting down. I ran 2 different virus scans that show nothing, I did a disk
check and the computer will still not shut down and reboots. I did a master
switch shut down and allow the computer to cool down. I restarted about an
hour later and I still can not shut it darn thing down.
This is the error code I get:
Error code 1000000a, parameter1 000000b0, parameter2 00000002, parameter3
00000000, parameter4 8050eef5.

0000: 53 79 73 74 65 6d 20 45 System E
0008: 72 72 6f 72 20 20 45 72 rror Er
0010: 72 6f 72 20 63 6f 64 65 ror code
0018: 20 31 30 30 30 30 30 30 1000000
0020: 61 20 20 50 61 72 61 6d a Param
0028: 65 74 65 72 73 20 30 30 eters 00
0030: 30 30 30 30 62 30 2c 20 0000b0,
0038: 30 30 30 30 30 30 30 32 00000002
0040: 2c 20 30 30 30 30 30 30 , 000000
0048: 30 30 2c 20 38 30 35 30 00, 8050
0050: 65 65 66 35 eef5

Do I need to re-install Windows or do a repair and how do I do that

 

[Guest]

A shutdown troubleshooter http://aumha.org/a/shtdwnxp.htm

 

[Guest]

Had to do a clean install of Windows XP Pro. Norton Internet Security Suite
and the new Zone Alarm firewall are not compatible. Norton's download files
corrurpted a OS file. Same thing happen on my laptop this morning. It went
to the shop, I could not get it to restore the OS. Just now getting
reconnected.

Thanks for your reply