The default vga card not longer works with a Windows 2000 guest. All I see is a black screen after a the Windows splash screen.
This is the command-line I used: qemu-system-i386 -hda Windows2000HD.qcow2 -boot c -m 512 When using the -vga cirrus option video works. Testing was done with QEMU v2.10.0 rc2.