P4VMM v3.0 maximum CPU and HDD supported information as below,
CPU: Pentium 4 400Mhz FSB (256K/512K L2 cache) CPU – 2.4G.
Celeron 400Mhz FSB (128K L2 cache) CPU – 1.8G
Download the V18.104.22.1681 Windows XP VGA driver from the VIA website, and the problem should be solved.
Ezonics has provided a new driver to patch it.