device: 0.151 boot: 0.142 semantic: 0.137 PID: 0.086 graphic: 0.085 performance: 0.071 other: 0.070 vnc: 0.064 files: 0.053 permissions: 0.044 socket: 0.037 network: 0.030 debug: 0.025 KVM: 0.005 debug: 0.453 files: 0.104 boot: 0.083 performance: 0.076 network: 0.055 other: 0.045 device: 0.036 semantic: 0.034 socket: 0.033 PID: 0.032 permissions: 0.015 graphic: 0.014 vnc: 0.013 KVM: 0.006 QEMU Intel HAX Windows Hi, Using the latest exe's from http://qemu.weilnetz.de/w32/ C:\Users\therock247uk\Desktop\jan\qemu-w64-setup-20170113>qemu-system-i386 --enable-hax -m 512 -cdrom C:\Users\therock247uk\Desktop\jan\en_windows_xp_professional_with_service_pack_3_x86_cd_x14-80428.iso HAX is working and emulator runs in fast virt mode. Failed to allocate 20000000 memory The emulator seems to hang/get stuck during booting from the CD taking out --enable-hax allows it to boot. Which version were you exactly using? Can you still reproduce the problem with the latest version of QEMU? [Expired for QEMU because there has been no activity for 60 days.]