Microsoft Exchange Information Store service will not start.

Kind of desperate for some help here.

The Microsoft Exchange Information Store service will not start and the event log says: "The Microsoft Exchange Information Store service terminated with service-specific error 0 (0x0)".

I have been working on this for hours and have not been able to fix this. I have already followed but it did not help. Some previous entries in the System error log are showing that some services cannot start due to a missing file so I am confident that the store service is being affected by something like that as well...but I did a full C drive file restore using ntbackup and it didn't help.

Any ideas??
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q3tech15Author Commented:
Fixed the problem. For some reason the SMTP service got uninstalled?? No idea how but I re-installed it and I was then able to start the Information Store.
try the following KB : 
q3tech15Author Commented:
I've already tried that as well. Didn't help.
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Muzafar MominCommented:
it seems to be some exchange DB issue
check the exchange database health status using

and the restart then services
which file is missing?
after the restore - do you see new errors in event logs?
try to run Exchange Best Practices Analyzer
q3tech15Author Commented:
I figured out the problem.
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