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HOSTING

Enable virtualization

Turn on the CPU feature needed to run customer virtual machines.

ThinkCentre BIOS guidance · Firmware layouts vary

You can enable this before installing Proxmox

CPU virtualization lets Proxmox run guest operating systems. Enabling it does not erase your files or install Proxmox. Save open work before restarting.

Lenovo ThinkCentre steps

  1. Restart the ThinkCentre with a keyboard and display attached.
  2. Tap F1 repeatedly when the Lenovo logo appears to enter BIOS Setup.
  3. Open Advanced → CPU Setup. Find Intel Virtualization Technology and change it to Enabled. Some firmware versions place virtualization under Security → Virtualization instead.
  4. Press F10 to save and exit, confirming the save when prompted.
  5. Let Windows start. Press Ctrl + Shift + Esc, open Performance → CPU, and look for Virtualization: Enabled. Choose More details first if Task Manager opens in its compact view.
  6. Shut down and continue with the ComputerUse boot USB.

Names and menu locations vary by model and BIOS revision. VT-d/IOMMU controls device isolation and is separate from the CPU virtualization setting; enabling VT-d alone is not the same as enabling VT-x. A greyed-out setting may require the computer's BIOS administrator password. That password is separate from your ComputerUse enrollment code.

Lenovo virtualization instructions · Lenovo ThinkCentre CPU settings.

If F1 does not open BIOS

On supported UEFI installations, use Windows Settings → Update & Security → Recovery → Advanced startup → Restart now → Troubleshoot → Advanced options → UEFI Firmware Settings → Restart. Windows 11 places Recovery under Settings → System. If UEFI Firmware Settings is absent, use the Lenovo startup key method.

The boot USB checks the computer

The boot environment checks CPU virtualization support before installing. Firmware settings still need to be enabled using the computer's firmware interface. Final verification checks that the installed Proxmox host has working KVM.

After virtualization is enabled

Continue with Proxmox host setup. Boot the USB and select the exact internal disk to install. A successful firmware check does not mean the computer is ready for customer rentals.