http://community.acer.com/acer/tracker sergi Tracker Sat, 15 Nov 2014 14:09:26 GMT 2014-11-15T14:09:26Z http://community.acer.com/t5/Ultra-Thin/V5-573G-and-installing-GTX-850M-drivers/m-p/274656#M8666 <P>You have to disable driver signature enforcement!</P><P>&nbsp;</P><P>Then try this:<BR /><BR />1) open nvami.inf in notepad<BR />2) replace all SUBSYS_22CA1043 with SUBSYS_079B1025<BR />3) replace all 22CA with 22CB<BR />4) save and run setup.exe<BR /><BR /><BR /></P> Fri, 01 Aug 2014 09:45:38 GMT http://community.acer.com/t5/Ultra-Thin/V5-573G-and-installing-GTX-850M-drivers/m-p/274656#M8666 sergi 2014-08-01T09:45:38Z