Missing server side dependencies Error in SharePoint 2010

Solution I:
I enabled the service and also noticed that in central admin configuration there's an error listed:

Missing server side dependencies. 

[MissingWebPart][WebPart class [8d6034c4-a416-e535-281a-6b714894e1aa] is referenced [12] times in the database, but is not installed on the current farm. Please install any feature/solution which contains this web part. One or more web parts are referenced in the database, but are not installed on the current farm. Please install any feature or solution which contains these web parts.] 

[MissingWebPart][WebPart class [8d6034c4-a416-e535-281a-6b714894e1aa] is referenced [6] times in the database, but is not installed on the current farm. Please install any feature/solution which contains this web part. One or more web parts are referenced in the database, but are not installed on the current farm. Please install any feature or solution which contains these web parts.] 

For more information about this rule, see "http://go.microsoft.com/fwlink/?LinkID=142689".

Failing Services - SPTimerService (SPTimerV4)

This error will appear on a cleanly installed system in the Health Analyzer Reports until you visit the following pages:


SearchAdministration.aspx
SearchFarmDashboard.aspx

These are: Central Administration, General Application Settings, Farm Search Administration and then Search Service Application.


Browse to them and the error will no longer appear in the Health Analyzer Report.


Solution II:

You just have to setup the "SharePoint Foundation Help Search", who will crawl all the Sharepoint Help files (http://{centraladmin}/sites/Help).
After one or two minutes, the error will disapear....