Memtest86+ V4.20 Beta 4 Bin : http://www.memtest.org/download/beta/420b4/memtest.bin ISO : http://www.memtest.org/download/beta/420b4/mt420.iso Memtest86+ V4.20 will be released in ~10 days. Changes are complete support for Intel "Sandy Bridge" CPU and some bug fixes. We added a "fail safe" mode for the rare case where memtest86+ fail to boot on some PC. Just press "F1" when Memtest86+ is loading to enter "fail safe". Many details will not be displayed on screen but the reliability of the tests will remain the same.