Plug and Play Service causes Referenced Memory Malfunction

When I start my computer, if the Plug and Play Service is turned on, I get an error. "The instruction at 0x00aa96bc referenced memory at 0x00000000. The memory could not be written." This error goes away if I turn off the plug and play service, however my device manager does not load, my computer thinks it's on battery when it's not and my network connections are not present. These are the only ones that I have found. Can I reinstall the plug and play service somehow, or is there any other sollution. On another note I ran Memtest 86 on this machine for 5 days without one error, so I don't think it's the Ram Chip. I also don't have any periphial devices pluged in to the machine at this time.

This error also seems to be causeing another Generic Host Process for Win32 Services to experience problems. The service is one of the SVChost.exe services, so I don't know which program is using the svchost service. The service name is svchost.exe.mdmp. The service closes when windows starts, I don't know what the effects of this is.

This is a widows xp professional system.

Sincerly,

Anthony Ortolani
ajortolaniAsked:
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grayeConnect With a Mentor Commented:
Hummmm...  

How current is the BIOS on the PC?   Is there an update available?

The fact that it occurs only in SP2, would be an indication that it's probably related to the "new" Data Execution Protection (DEP) feature.

http://support.microsoft.com/kb/875352

The article includes instructions on how to disable DEP.  (But, I'd still try the BIOS update first)
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grayeCommented:
Tell us more about the error message... can you post the entire contents here?
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ajortolaniAuthor Commented:
I removed service pack 2 and the problem went away. When I reinstalled the service pack it came back. I currnetly am operating without the service pack, however I'm not still sure of the problem.

The entire error message is above.  

               "The instruction at 0x00aa96bc referenced memory at 0x00000000. The memory could not be written."

This is usually followed by a svc host process shutting down.

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