but the machine is not going after login screen. (Stuck at starting SVService).
When the desktop provisioning has been failed, deployed VMs will not removed, specially if you set the desktop pool settings to provision of error.
Please check and compare the version of Horizon Agent (that you setup in the template / VM) and version of Connection Server / Composer Servers.
Also please tell you “How do you assign IP addresses to your provisioned desktop in this linked-clone pool” ?
Please mark my comment as the Correct Answer if this solution resolved your problem