KVM virtual machines won't start!

[mecak]

Hi there,
I have several virtual machines (KVM) that do not start. In fact, when i push the start button in the UI, nothing happens. Can you help me debug this please.
Thanks

 

[dietmar]

try the command line tools (see 'man qm')

# qm start <VMID>

 

[mecak]

Thanks man it worked.
The command line threw an error saying the iso file (cdrom) doesn't exist. I changed the hardware configuration to discard the iso file, and it worked.. Weired however why from the UI we can't see that error...
Thanks a lot for the quick reply!!