Virtual Machine software problems in Windows 7 and Vista

Running Microsoft Virtual Server 2005 or VMware Server on Windows XP is normal. But in Vista and Windows 7

When starting a virtual machine, these software will cause the system to be in a dead state. This State will last for about 30 minutes, and then shut down the Virtual Machine and start it again. You cannot disable the UAC system. At first, I also suspected that it was a problem with my computer and machine equipment. Later I tried many machines, including Dell and HP machines, and finally confirmed that they had nothing to do with machine hardware devices. There are also many questions about this on the Internet. However, there is no effective solution.

 

Later, I tried to install virtualbox and found that there was no such problem in virtualbox loading Vista or Windows 7. Later, I tried virtual pc2007 (which is free for Microsoft now) and did not find any of the above problems.