That's not something you can achieve simply by using a modified BIOS, it depends on how the mobo is designed. With the V3 771 the dGPU was not connected to the display, making it impossible to not using the Intel HD, most likely it's exactly the same case with the 772, meaning if you change the display settings then you will end up with a black screen.
Thanks for your remark. When I play HD video at 60 fps, I have frames that are dropped from time to time. It doesn't come from the player, it is really after that (so on graphic card side I guess). It is really annoying. I see that when I play video the Nvidia card is not used at all (thanks to Optimus). I therefore wanted to try to "force" the use of Nvidia card all the time to see if it removes those "frame drop" issues. I know that at some point both Intel and Nvidia merge their pipe in order to display the frames, but I don't know if the problem is happening after or before this pipe merge. To summarize, that's true that maybe bios mod will not solve anything. But I wanted to have a try since I don't have any other idea (beside putting this expensive laptop on ebay and re-buying a "working" one )
Hi guys. I have a lenovo ideapad U550. I have been trying install windows 8 on it for a while but no chance. My actually bios spec. are: Vendor: LENOVO Version: 23CN21WW Release Date: 10/29/2009 ROM Size: 2048 kB PCI is supported BIOS is upgradeable BIOS shadowing is allowed Boot from CD is supported Selectable boot is supported BIOS ROM is socketed EDD is supported ACPI is supported USB legacy is supported Targeted content distribution is supported BIOS Revision: 0.21 Firmware Revision: 3.22 Could I request a modded version of this bios? Thanks
Sorry. The main error was ACPI bios not fully compliant. Plus a sad face told me that my pc ran into error and need to be restarted...I tried also installing 7 and xp with same results. My laptop was originally shipped with windows 7 home edition. On the Lenovo website no bios update present or planned. Thanks.