semantic: 0.201 graphic: 0.162 device: 0.113 other: 0.100 boot: 0.053 performance: 0.052 socket: 0.050 vnc: 0.047 debug: 0.046 PID: 0.044 network: 0.039 files: 0.037 permissions: 0.034 KVM: 0.021 debug: 0.673 performance: 0.058 boot: 0.050 PID: 0.035 other: 0.034 files: 0.030 device: 0.022 network: 0.020 semantic: 0.019 socket: 0.019 KVM: 0.012 graphic: 0.012 vnc: 0.010 permissions: 0.007 windows7 reboot bluesreen 0x0000005c I have met sevaral blue screen with 0x0000005c(0x0000010b,0x00000003,0x00000000,0x00000000) after windows7 reboot. It always happens just before the windows iron animation appears. my qemu version is qemu-2.1.0 my guest os is windows7 32bits sp1 my qemu commandline is ./x86_64-softmmu/qemu-system-x86_64 -m 2048 -hda system.inst -spice port=5940,disable-ticketing -monitor stdio --enable-kvm This bug doesn't happen always,and i don‘t know how to reproduce it. But i have a special way to produce such a bluescreen. I set nmi dump on and set windows to collect dump file and set auto reboot after system fail on. Then i send a nmi to guest, and then after collecting dump file , windows will auto reboot and then such a blue screen happens. And this can be reproduced always. Triaging old bug tickets... can you still reproduce this issue with the latest version of QEMU? Or could we close this ticket nowadays? [Expired for QEMU because there has been no activity for 60 days.]