cmoy1285 Posted March 14, 2015 Share Posted March 14, 2015 I have black screen with new GTX680. If I use also HD4000 then I see everyting. OS found new graphic card and I install last drivers but when I press atl+F7 to swich for GTX680 after restart all what I see is black screen. What should I do? Flash VBIOS or what?lonerMAC, is the 680m still going to black screen with the new 240w power supply? Quote Link to comment Share on other sites More sharing options...
lonerMAC Posted March 14, 2015 Share Posted March 14, 2015 What max temp was you seeing? Any luck on the PSU?73°C max. with furmark stress test. With old 660M max 63°C with same test. PSU 240W dell ac adapter Quote Link to comment Share on other sites More sharing options...
lonerMAC Posted March 15, 2015 Share Posted March 15, 2015 lonerMAC, is the 680m still going to black screen with the new 240w power supply?Yes. With integrated HD4000 no, but after I switch integrated HD4000 off then I have black screen. Windows working good because I hear skype login sound but screen is black. I also can press FN+F7 to swich back, but I cant use it with two graphics because then I have grained screen. So I have grained screen when I using Integrated and Dedicated graphics and black screen when I using only Dedicated graphic card Quote Link to comment Share on other sites More sharing options...
lonerMAC Posted March 17, 2015 Share Posted March 17, 2015 If I want to use GTX680M I must have 120Hz display on my laptop? Because I have 60Hz. That's why I have black screen if I use GTX680M only? (with disabled optimus and HD4000) Quote Link to comment Share on other sites More sharing options...
medoz95 Posted March 27, 2015 Share Posted March 27, 2015 I have your exact same setup as of now.How is it holding for you? Quote Link to comment Share on other sites More sharing options...
DocBurN Posted April 14, 2015 Share Posted April 14, 2015 i just want to add my small 2 cent.. i had the king of overheating.. a master throttling 580M in my M17XR3 and went to a 680M and it was the best move i ever did.. flawlessly working since october 2014 .. i am in love with my 680M and never throttled once... what the "$%? was wrong with the 580M edition.. geeez Quote Link to comment Share on other sites More sharing options...
B4n6k3 Posted April 15, 2015 Share Posted April 15, 2015 If I want to use GTX680M I must have 120Hz display on my laptop? Because I have 60Hz. That's why I have black screen if I use GTX680M only? (with disabled optimus and HD4000)No you're not. My system run on stock 60 Hz on screen and also with the Optimus system disabled. Never had a problem on Display since I installed 680m for replacing my 6990m...... Quote Link to comment Share on other sites More sharing options...
[email protected] Posted May 25, 2015 Share Posted May 25, 2015 to avoid overheating is recommended to clean out the dust every heavy use or 3 months the laptop.Disassembling is quite easy,but deep cleaning need take out the fans Quote Link to comment Share on other sites More sharing options...
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