Based on this
UnityPlayer.dll caused an Access Violation (0xc0000005)
in module UnityPlayer.dll at 0023:68c775c6.
A most likely cause is something is interferring with unity,
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It could be cause by something is running in the backgroud or a windows update
for now take look at what's running in the background
specifically if you have a program called Citrix as it's been known to cause issues with unity games, if you have citrix installed I would unistall it and see if it helps
another possibility is you can try disabling your antivirus.