McShiled services is not starting because it's dependent on McAfee Validation Trust Protection Services. Possible there is corrupted removal of VSE or might be the McAfee Agent 5.X present.
If you are using some other point products like HIPS, DLP etc then this could also created a problem, Please remove every point products and make a reboot and then install fresh.
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Thanks I will try this if I have this issue again, I had to remove all the McAfee applications and then re-install it to get it functioning.
In my environment it was due to a failed HIPS patch/update. The Validation trust got corrupted due to failed update.