I have 3 optiplex 790 purchased within last 3 months.  All are similar configurations with  exceptions being processor & memory.

These 3 units are being used as file servers on three separate very small networks (completely separate physical locations and networks).

They are all exhibiting  the same symptoms of random 'disk error 11' showing up in the event logs and database corruption of an MS Access database (records being lost).

Have run chkdsk /r and thorough hard drive diag through  Dell boot time diagnostics.

These problems did not occur until we replaced Opti 780's with the 790's.

Thoughts?

GK