Laptop unable to open VirtualBox
4.5
VirtualBox won't launch or VMs fail to start with "VT-x is disabled".
Symptoms
- App crash
- VM error
- No response
Possible Causes
- Virtualization disabled in BIOS
- Hyper-V conflict
- Driver error
Step-by-Step Fix
1
Enable VT-x/AMD-V in BIOS
Mandatory for running virtual machines.
2
Disable Hyper-V
VirtualBox often conflicts with Windows Hyper-V; disable it in Windows Features.
3
Reinstall VirtualBox Drivers
Run the installer and select "Repair".
When to See a Technician
If you need Hyper-V for WSL2, ensure you are using VirtualBox 7.0 or newer which supports co-existence.
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