The windows 7 CD contains a good memory test that you can run by inserting the CD and booting from it and selecting the memory test. If you want something a bit better then download memtest86 ISO and burn a bootable disk.
How can I find this windows memory test? Does it just pop up in the autorun menu or something? Sorry noob question.
There is an Auto-installer for USB Key (Win 9x/2k/xp/7) that is available from memtest.org:http://www.memtest.org/download/4.10/memtest86+-4.10.usb.installer.zip
I have downloaded that, it creates a file syslinux.cfg, copying, mt86plus, & readme. Then I boot from the USB. It says:
SYSLINUX VER ... bla bla
No DEFAULT or ... !
Then it stops at that..