No data is seen, when Performance Analysis for SQL Server (PASS) is trying to monitor SQL Server version 10.0.4279.0 of SQL2008 running Windows x64.
SQL Server version 10.0.4279.0 of SQL2008 is not supported by the default version of Performance Analysis for SQL Server.
Waiting for fix in a future release of Performance Analysis for SQL Server.
Note: Please note that the SQL Server user account needs sysadmin privileges to be able to monitor SQL Server 2008 and up.
If after the upgrade you are still seeing no data, then please create a support bundle as per the details below, create a new service request and send the support bundle attached to it: