Tak bud nemas Win7, alebo si tam uz pustal nejake cleanery a mas uplne vsetko rozosrate a mozes nainstalovat Windows nanovo.
//edit: aha to mas Home, tak to je naprd.
Inac to co chces sa da udajne aj cez group policies, vid
http://www.mydigitallife.info/2009/06/15/disable-a nd-turn-off-taskbar-thumbnail-preview-in-windows-7 -switch-to-list-view/