Hello, ive been trying to install windows 7 on my laptop, and yes it has an unlocked bios but the legacy option does not work. When trying to install windows 7 it freezes on boot of the setup (and also actually booting windows 7). When going into safe mode, the last thing that it says/freezes on is disk.sys. I do have modded intel graphics drivers for windows 7 and am willing to try anyones ideas.
Thanks.
Windows 7 does NOT support pure UEFI without CSM because it has one specific routine that relies on executing the legacy VBIOS: https://www.linux-kvm.org/downloads/lers…per-c770f8c.txt
With the recent success of porting a VMWare NVMe Driver intended for VMs to UEFI Firmwares (I don’t know exactly what it did over standard ones that made it interesing), I’m wondering whenever the same hack than TianoCore uses to get Windows 7 running in pure UEFI mode could work in native environments…
… or disable standard vga after slipstreaming a signed display driver. Worked for my Acer Spin 5 which has UEFI Class 3, no CSM.
@XPLives - Any tip here? I see this while I was looking around helping him in another thread - https://forums.mydigitallife.net/threads…hout-csm.79551/
See also post #3 there, talking about doing this Pre-OS install too) - And see post #12-13 for alternate edit method - And see #14 too 
<< IN regards to #14, see also last post in thread for update/fork
So, I assume install UEFI, make the changes noted, then reboot and switch (like we can do via reg edit for enable RAID/AHCI on AHCI/RAID installed system)
Alright so I can integrate my graphics drivers with ntlite and then remove the vga driver and apply the regedit stuff and I should be good to go? I dont understand the bcdedit stuff, is that neccesary?
There’s several methods discussed there, if you intend to use any that edit BCD then yes that is necessary 
BCD editing and or windows10 boot loader methods/files etc is what solves the issue in some of those discussed fixes.
Don’t let it scare you, they’ve outlined what to do and how, and if you can’t do manually there is several BCD editing tools with easy GUI nterfaces, check google and you will find them
@Lost_N_BIOS By bcdedit I meant: " and do bcdedit changes before you boot Windows." on the link you sent, https://forums.mydigitallife.net/threads…hout-csm.79551/.
Im not sure what the author is refering to regaring the bcdedit changes that you must do before booting windows.
Yes, I know what you meant. He meant you need to edit BCD files via BCDEdit (it’s a windows command line tool, to edit BCD Store) Or you can use a BCD edit tool with GUI, such as EasyBCD
Some BCD editing guides for your perusal
https://neosmart.net/wiki/bcdedit/
https://medium.com/@duminduakalanka.14/h…ol-2e9c1328eb2b
https://www.reneelab.com/bcdedit-command…windows-10.html
woshub.com/how-to-rebuild-bcd-file-in-windows-10/
EasyBCD Editing tool w/ GUI - https://neosmart.net/EasyBCD/
Direct answer about >> "and do bcdedit changes before you boot Windows."
He’s referring to the edits right above that line you quoted, Do those changes before you reboot back to windows. Do this with install disk/ISO, get command prompt via Shift + F10 at the first install screen, or via troubleshoot/repair options etc.
@Lost_N_BIOS I followed the guide and did the bcdedit commands and everything seemed fine until on the first boot it said "Setup is updating Registry settings" and has been stuck there for a while now. Do you know how I could fix this?
@DeathBringer just tried the post you linked http://reboot.pro/topic/21108-install-wi…l-gop-hardware/ but I get a black screen upon rebooting. Any ideas @Lost_N_BIOS
If you get a black screen then you’re good. Installation will continue with black screen and after automatically rebooting, you should get video input for the final stage of the installation. If it won’t reboot or you get no video in the end, then your slipstreamed video driver does not work. You may have to try different versions of intel uhd modified drivers, you need to make sure it’s signed and also integrate the certificates in the installation.
I find everything easier to do using dism form a win10 pen version, see everything here: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines)
Depending on your CPU you have to use a certain modified driver compatible with your machine. For my Kaby Lake Refresh platform, I used the driver compatible with uhd 620. For uhd 630 there are 2 basic modified versions, you can find them in the appropriate topic.
What cpu do you have?
Thanks @bloodhand - looks like you know a good deal about this, glad to see you stop in here to help @Kebicle
Well I got it figured it out using some guides from all over the internet, but they didn’t need any modified uhd drivers. That part was resolved with the help of you guys modifying the drivers. Only the integration of the certificate into the installation had to be figured out. Then I helped another user and he also made a video tutorial: [VIDEO] How to get Win7 installed onto modern Intel Chipset systems (with an 8th Gen CPU) plus drivers
@bloodhand Can you help him insert the certificates, or is that in your linked info/guides above? I think Chinobino has linked him to a confirmed working driver set, but unsure if that is same ones you are talking about (I think it’s Nvidia ones chinobino linked)
I tried 3 different drivers that should of worked. Let me explain what was happening, reboot, blank screen for 8 minutes ish, and then my system would reboot, and then after around 15 minutes it still didnt show up. Gave up there. Should I have waited longer after the reboot? Please tag me if you respond.
If you don’t have a signed driver of you didn’t insert the certificates into the installation, the video driver won’t be loaded during setup so you won’t get past the black screen. See my guide from my posts above. I advise you to follow my tutorial in order to self create a certificate, sign the driver yourself with it and then integrate everything into the installation.
Just use this: https://pastebin.com/d4hN4ih0
First you follow my guide step by step. If it doesn’t work, you need to use a different driver from the uhd 630 topic (there are at least 2 versions) and skip the driver modify section, just only sign the driver.
To make it easier please let us know what CPU do you have.
Depending on the cpu and intel uhd version he has, he might need a different driver. The uhd 630 versions from this forum don’t work on my uhd 620 kaby lake refresh, so he has to try every driver until it works. I gathered all the driver versions on that topic. This has to do with integrated graphics, dedicated NVIDIA driver can be installed afterwards.
Yes, in my guide is it indeed clear how he can self sign the driver and integrate the certificate into the installation. I don’t know how to do this using the classic installation method, he cannot integrate a certificate without a win10 uefi pen edition.
I DID IT. THANKS GUYS <3
Great! For your CPU this driver is the best: Win 7 x64 Coffee Like UHD 630 Video driver (2)
Test a h264/h265 video file (not in the browser) to make sure video acceleration and decoding works.