I think looking for a device manager (Control Panel | System | Hardware | Device Manager) should give you a good idea.
On a single server running VMWare ESX, I see the following telltale signs of a virtual machine:
- System Devices: VMware Server Memory Controller
- Network: VMware Accelerated AMD PCNet Adapter.
- Mice: VMware pointing device
- Disks: VMware virtual disk SCSI disk device
, VMware, :
ipconfig /all | grep "VMware Accelerated"
(, VMware)