When I play some games or even use Google Earth my system crashes and get a bluescreen error. In the toolbar there is a message that says "graphic card stopped responding" or something like that (I don't have English computer). Could this have something to do with the thing that I have only 300W power supply and the card requires 400W. In the control panel in the power control settings I have "recommended settings". The two more options are "best performance" and "power saving". Should I get a new powerful enough power supply and should I change the settings in control panel to "best performance"?