A friend of mine kept getting this, so we did some looking into it and it can apparently be caused by a few things.
1. - Aggressive memory settings in BIOS. If you have messed with any memory settings in your CMOS setup, try putting them back to default.
2. - Driver problem - apparently the error message can be caused by a driver accessing a part of memory that it shouldn't. So if you have installed any new drivers try rolling back to the last ones.
3. - Don't know if this is a common problem, but we fixed my mate's pc by disabling all the unused USB/Firewire ports in Device Mangager as they seemed to consuming an awful lot of resources unneccesarily. (I told him he wouldn't need em all - 8 USB ports for the 1 USB he actually has ) Problem never re-appeared after doing that.
If you search through the forums I think i remember there being a thread on this some time ago, just can't be sure