Hi Javas,
In this post, we wil see how to fix "Docker Desktop is unable to detect a Hypervisor" issue. Here we will go simple solution we can easily though we have many other.
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| Docker Desktop is unable to detect a Hypervisor | 
Lets start ..
1, Click Windows + R and type "optionalfeatures" and click on OK.
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| Docker Desktop is unable to detect a Hypervisor | 
2, This open Windows Features tab with "Turn Windows features on or off", Here find the option 'Hyper V" and enable the same.
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| Docker Desktop is unable to detect a Hypervisor | 
3, Click on "OK".
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| Docker Desktop is unable to detect a Hypervisor | 
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| Docker Desktop is unable to detect a Hypervisor | 
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| Docker Desktop is unable to detect a Hypervisor | 
4, Restart your PC and run Docker desktop and check.