peripherals: 0.942 graphic: 0.892 architecture: 0.883 performance: 0.845 mistranslation: 0.744 semantic: 0.686 device: 0.643 user-level: 0.643 arm: 0.559 ppc: 0.345 KVM: 0.343 network: 0.300 TCG: 0.293 virtual: 0.290 files: 0.221 hypervisor: 0.193 vnc: 0.186 boot: 0.170 register: 0.166 socket: 0.156 permissions: 0.147 assembly: 0.123 debug: 0.116 VMM: 0.101 PID: 0.095 risc-v: 0.072 kernel: 0.064 i386: 0.028 x86: 0.026 qemu can't start Windows10arm64 19H1(with kvm) My cpu's model is arm64(cortex-a53),I want start Win10arm64 with kvm,Because is fast than x86.But it's did'nt work.The screnn is card in Uefi's logo. But I am use ramfb now,So it has nothing to do with the graphics card.But if I discard kvm,It can start now.But its so slowly.But I use the uefi and kvm can start with Debian arm64 buster. So who's the problem?qemu or kvm or Microsoft?But others use it to start successfully. I don't know what I would like to do This is start command(Qemu version is 4.1') qemu-system-aarch64 -hda /win10.vhdx -cdrom /win10arm.iso -m 1G -accel kvm -smp 4 -cpu host -pflash efi.img -pflash var.img -device ramfb -device qemu-xhci -device usb-kbd -device usb-mouse -device usb-tablet If I replace the above three parameters with "- CPU cortex-a53" and "- accel TCG" and "- device VGA", I can start normally. What's the matter? What is your host machine? And could you please try with the latest version of QEMU (v5.0)? I try use latest qemu,but It was the same And I am try Windows 10 build 19613,but was cant not start,too(sorry,My english It's not well) [Expired for QEMU because there has been no activity for 60 days.]