After P2V VM POST taking too much time in ESXI 6.5

[VMESXINEwbie]

I converted the Windows Server 2008 R2 which is installed on the Physical Server into virtual machine with P2V software. I installed this Virtual machine in Vmware ESXI 6.5. This guest OS takes too long to show desktop icons(After Entering Credentials) and showing blue screen for 10-15 mins. I am using Hardware of HP G6 Server.
Resources Allocated to VM
CPU core =4
Ram =4GB
Virtulization Software = ESXI 6.5
Guest OS = Windows Server 2008 R2

Steps taken for remedy
1) update my firmware.
2) remove unavailable hardware drivers from device manager.

Please find below images for resource utilization of VM.

[patrickds · Accepted solution]

Is this a Domain Controller / DNS server?

After P2V you should reapply network configuration, to make sure the VM can reach the network and DNS server, and that all network related services can start.