Hi, I just stumbled across your thread and I looked over your CONFIG.SYS. Have your tried adding the EMM386 manager right below the HIMEM.SYS line ? DEVICE=C:\WINDOWS\HIMEM.SYS DEVICE=C:\WINDOWS\EMM386.EXE RAM DOS=HIGH,UMB I think the “out of memory” message comes from not loading EMM386 and …