But development stopped in 2013 once Memtest86 was split into Memtest86 and Memtest86", with the former being bought by PassMark.Between 2002 – 2004 (during the time period of the MemTest86 V3.0 release and there wasn't much activity from Chris) the code was 'forked' by Samuel Demeulemeester (formally part of the French CanardPC publishing group in France) into another version of the software called MemTest86+.In Feb 2013, after another long period of not much development, PassMark Software took over the maintenance of the original MemTest86 project from Chris.PassMark added ECC support, Secure boot support (with Microsoft code signing it), Mouse support, a graphical UI, logging of test reports to the disk, Native 64bit, Some 128bit testing, support for a heap of new CPUs, DDR5 support, row hammer testing, command line boot configuration, PXE network booting, multi-language support, inventory checking, ECC injection, debug logging, performance improvements, ARM CPU support, memory address decoding (to tell you exactly which memory stick and chip on the stick is bad) and a bunch of other stuff.The lack of secure boot being especially problematic for novice users as Win11 requires secure boot to be on, but Memtest86+ requires it to be off."