It is a 64Bit PC...? Which BIOS? How have you managed to get Win7, -10 and -11 on one machine...? I've tinkered for weeks to have at least a Win10(64) additionaly to Win11 (which is on a SSD) an a second HDD and wanted to select the OS with EasyBCD, but I failed by now... AFAIK there are limitations to use EasyBCD if there is a Win11 OS... Does sombody know more?