Edit file File name : x86_pentium.xml Content :<cpus> <model name='pentium'> <decode host='on' guest='on'/> <feature name='cx8'/> <feature name='de'/> <feature name='fpu'/> <feature name='mce'/> <feature name='mmx'/> <feature name='msr'/> <feature name='pse'/> <feature name='tsc'/> <feature name='vme'/> </model> </cpus> Save