Mother board/cpu problem?

[linda]

I'm trying to figure out if this is a mother board or CPU problem.
My computer crashes after 5 to 10 min everytime. The error message that windows says, is something about the graphics card and try to lower the graphics rendering...
But it's not this, cus I've gotten a second PCIe ati graphics card and that does the same thing.

Sometimes when I boot up I get an overclocking error.

Also of note, it works ok in safe mode.

I get a quick blue screen and it usually says trying to access some memory that's not executable. It's to quick for me to read though.

[jeffery]

Give system specs. also if you can get the stop error code on the blue screen it would be great or it mite be in event viewer also if you know around what time it blue screened.