You might see this message if you are using a new graphics driver that has only recently been released. We usually test and approve new WHQL-certified drivers within a few working days. Once the driver is approved, your benchmark result will be approved automatically as well.
You will also see this message when using beta, 'hotfix,' or other non-WHQL drivers. In these cases, you will need to wait for WHQL-certified drivers before you will be able to submit valid results.