mysqld-nt: Incorrect key file for table '.\opmanagerdb\polleddata.MYI'; try to repair it

mysqld-nt: Incorrect key file for table '.\opmanagerdb\polleddata.MYI'; try to repair it

Hi,
 
How can we resolve our problem with regards to mysqld-nt? We can no longer get data from the servers.
 
Hoping for your assistance.
 
Thanks.
 
Buena

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