lonerMAC

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)

Can anyone please help me with this issue? Please see the attached screenshot. Whenever I try to update my BIOS, I get this error and I don't know how to resolve it.

Thanks Anticipation.

Current BIOS X17? It's some kind of unlocked BIOS or what? I think dell have only A5, A9, A11, A12 and latest is A13

When I press FN+F7 with using UEFI and restart laptop, he restart it twice and switch back to optimus. When I use BIOS and disable UEFI boot then after FN+F7 my system start normally because I hear skype login sound, but I have black screen. With 660M was everything good, but afted upgrade to 680M I have black screen and no idea why.

This HD4000 is on CPU? Same chip? If yes then if I buy new CPU and change it, then I fix HD4000 too?

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

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

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?

actual vbios version: 80.04.33.00.32

I wish to have same problem like you because my integrated HD4000 is probably broken. I have grained screen. Tried everything and still don't fix it.

thermal pads for M17X R4's GPU GTX 680M | NotebookReview

The two thin pads at the top are around the 3mm mark and if you look at my pic dell use some sort of thermal putty there. As I recall the memory was .5mm (or 1mm) and most of the rest 2mm

HTH

Thanks, I used Fujipoly Extreme 1,5mm, 11W/mK and also thermal paste because 1,5 was not enough, then 3mm and 5 mm. IC Diamond 7 for GPU. Temperature 3°C higher like on old 660M but I think it's minimum difference. Bad is that I cant use it on 100% because one eBay seller send me broken 240W ac adapter so I still waiting for new one and using old 180W which is not good. BIOS always showing me warning and asking me to change it for 240W

Maybe it's a stupid question, but why is A13 better for win 8,1 then A11 or A12? I have M17xR4/ i7 3630QM/ GTX660M upgraded to GTX680M and if I forget on problem with dithering screen when using both graphics (HD4000 must be disabled and dithering is gone) then everything is ok. Or it seems to be.

I used 11W/mK, 3mm in mine, seems to work well.

Thanks, ordered. And you use only this one size? I saw some videos and it looks that there is also 1mm or 0.5mm.

what kind of thermal pads I can use for 680m? What thickness? I don't want to use the old one from 660m.

edit: I found 5,6,7,11W/mK which one is enough? And thickness 0,5-3mm. which one?

Hi I have M17x-R4 with HD4000 and GTX 660m. Want to upgrade to 680m. I have three pipe heatsink but don't know if its 100W or 75W. Also I have 180W ac adapter and I think it's not enough for this card. So I should to buy 240W ac adapter. BIOS version is A13. It mus be all right, and VBIOS I have got no idea, but I ask seller to flash it for M17x-R4.

But my biggest problem now is with shared graphic card HD4000. I have grainin screen. Not everywhere. Most on the place where colors are change. If I use wrong pixel test and display only one colour, then everything was good. If laptop is cold and I switch it on after one or more hours then screen looks like with 256 colours only. Then after temperature grows it better and better but dithering really never disappear. I try to upgrade drivers, flash BIOS but nothing helps. Only if I switch HD4000 off with FN+F7 and using only GTX 660m, then screen is without problems. Sorry for my english, but I learn this language only half year from South Park series So can anybody help me with this? I mean with this video cards