Data Execution Prevention: is this real???

The system hung, I had to restart and when I did a box came up about NVidia driver and that DEP had to block the program, etc, etc.

All seems fine now, but reading the web page thta came up with the warning it referes to vruses in memory…

Here is the page: ms-its:C:\WINDOWS\Help\Update1.chm::/DET_overview.htm

Does not look like MS and looks fishy.

Help!!

Yes, but only if you leave DEP turned on for that program. Windows can continue to detect attempts to execute code from protected memory locations and help prevent attacks. In cases where a program does not run correctly with DEP turned on, you can reduce security risks by getting a DEP-compatible version of the program from the software publisher,

polonus

Thanks

But does this mean I have a virus in memory?

Strangely enough I have just goneinto ControlPanel/System/etc all the way to DEP and found two entries:1 for Avast; and another for NVidia. Of the two round buttons, the bottom one is chosen. The square boxes: the one for Avast is checked; the other must be the one just arrived!

Why should vast be there, and what should I do, please?

qim