C hecksum error during the restoration of backup

Hi, we have navision erp with database sql server. suddenly its database from sql server got missing. and an error of 'odbc ’ when we open the erp. now we have the backup of the privious day but when we are restoring it, gives an error is display"BACKUP IS CORRUPTED(CHECKSUM INCORRECT)". Now what is the solution of this prblm. plz reply soon, its very urgent.



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