System State Restore

Had to perform a reinstall of OS over a corrupted OS, could repair it and as a result we have all of the data and the programs in c:\Program Files but none of the programs are hooked into the OS

The C: drive was not backed up only the system state, SQL instances and E: drive (data), using Veritas s/w

The server is a member server

My Question is what will the System State actually recover? Do I need to reinstall progs – will system state recover program file intergration back into OS?

Many Thanks
JJPOB
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