Ok it looks like by setting my 2.4gighz processor to 2gighz, brings down the ddr2 ram speed to 669mhz, which again is close to the rating of my ddr2 ram chips, if this test runs for the next couple of hours lockup free, then I would have resolved the issue, again, im using 'testmem86', d/l the iso version and burn this with nero, using the image option, which then makes your cd bootable, then restart your pc with the disk in the drive, and the, program will start up, oh and don't forget to go ino the bios prior, to make your cdrom bootable at startup, otherwise the disk won't boot with the program, I just mention this for people who might not be that tech savy. To get in the bios, hit 'del' key when your pc first boots up.