After installing nv2.28 the NV2 server service would not start intermittently at boot-up .
Service could be started manually in service manager.
In event log file I had an event id 7009 service timeout.
Doing the following seems to have solved the problem.
I changed the value to 60000 milliseconds.
No problem in the last 2 weeks.
This is a quote from the internet.
The Service Control Manager will generate an event if a service does not respond within the defined timeout period (the default timeout period is 30000 milliseconds). To resolve this problem, use the Registry Editor to change the default timeout value for all services.
In the Registry Editor, click the registry subkey HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control
In the details pane, locate the ServicesPipeTimeout entry, right-click that entry and then select Modify.Note: If the ServicesPipeTimeout entry does not exist, you must create it by selecting New on the Edit menu, followed by the DWORD Value, then typing ServicesPipeTimeout, and clicking Enter.
Click Decimal, enter the new timeout value in milliseconds, and then click OK.
Restart the computer.