niewie1964
1 Copper

RE: Dell XPS 15 L502x buzzing and stuttering problems persist even after uninstalling Dell SupportAssist

Deactivate  "Dell Data Vault Wizard" in MSConfig.exe. Restart Windows. Then it should be ok. See also: http://www.trojaner-board.de/164790-kurzes-stoppen-alle-60-sekunden-troet-geraeusch-3.html#post1438609