windows xp, sp3 frequent BSOD

Lose system to the BSOD freeze. AFter re-boot, i check Ctl Panel; Administration Tools; Event viewer and
check the last error recorded. It is always
The Windows Security Center Service was unable to establish event queries with WMI to monitor third party AntiVirus and Firewall.

I then check the Services for the WMI performance adapter and find it was stopped. I start, then stop, then start it again.

Some time later, sometimes within minutes/hours, sometimes days, the BSOD freezes the system again.

I searched Lenovo, Microsoft and general WEB community for help, but none for Windows XP.

Seems to happen more clicking on links from MS Outlook 2010 to WEB sites. Also, often when asked for a password during logon during boot.

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows XP Home Edition, Service Pack 3, 32 bit
Processor: Intel(R) Pentium(R) 4 CPU 3.00GHz, x86 Family 15 Model 4 Stepping 3
Processor Count: 2
RAM: 2037 Mb
Graphics Card: Intel(R) 82945G Express Chipset Family, 128 Mb
Hard Drives: C: Total - 72378 MB, Free - 17152 MB; G: Total - 476937 MB, Free - 424390 MB;
Motherboard: LENOVO, LENOVO
Antivirus: AVG AntiVirus 2014, Updated: Yes, On-Demand Scanner: Enabled

Any help would be appreciated.

Thanks,

Terry Boyle