#1 [GUIDE] How to install Win7 x64 on Acer Spin 5 laptop by bloodhand 27.04.2020 11:06

See here how to install Win7 x64 on Acer Spin 5:
1) General guide: https://pastebin.com/d4hN4ih0
2) Guide only for i7-8550u 8th gen Kaby Lake CPU: https://pastebin.com/H0cWhQHH

The guide consists in multiple solutions for each step that I gathered around the internet, I only adapted them to the needs.

This guide includes links to all necessary files (including Win7 x64 drivers, hopefully they work with all Acer SP515 models, I could only test on mine which is a SP515 with i7-8550u CPU).

The main idea is simple: Acer Spin 5 has an UEFI Class 3 BIOS, which means no CSM. Windows 7's Standard VGA driver needs CSM to operate, so on a UEFI Class 3 BIOS it has to be disabled, otherwise it won't properly boot. But when you do this, you get no video during the installation, because during that the Standard VGA driver is used. Fortunately, there is a way to get video by integrating the integrated Intel graphic card driver so that the installation would automatically load it and get video output, but that happens only after the driver is loaded, so the first part of the installation will remain under black screen. The problem is that there is no official driver for UHD series on Windows 7, so the one for HD series has to be modified to be made compatible with UHD, fortunately that is possible. By modifying the inf file, you always lose the official signature and unfortunately Windows doesn't load unsigned drivers during setup. Therefore in order to get the driver loaded and get video output, the driver must be signed. Officially signing is very expensive and by unofficially signing you have to manually include the certificate into the Windows installation before it even starts to install. Luckily, that is certainly possible by integrating it via it's mounter registry. Some say that using test mode and disabling driver signing might also work, but there is too much uncertainty and something might go wrong and in the end test mode would appear everywhere. More than that, Windows 7's BCD boot files are incompatible with UEFI Class 3 BIOS, so they have to be replaced with those from Windows 10, luckily they match with each other. Finally, activating Win7 under UEFI is unusual, but made possible.

Update: I tested a newer version of the Intel Video Driver (21.20.16.4860, older was 21.20.16.4839) and it works better, with the old one I got occasionally black screen which was actually BSOD (because of missing vga you can't see blue screens). The bastards from intel have just removed the driver from their website (original URL was: https://downloadmirror.intel.com/27360/a....45.23.4860.zip), but luckily there is always a backup (thanks to softpedia: https://us.softpedia-secure-download.com....45.23.4860.zip). Just use the same method of editing the inf, then the 2 dll files and then signing. If you have windows already installed, you can update the driver manually in device manager with this one, if you get black screen you can force shut down and power on again, it will work. If you want to remove the old driver from the system to free up a few hundred MB, use the information from the first answer from here: https://stackoverflow.com/questions...-r...dows-7/27768776

This method can be adapted to any uefi class 3 computer using the right video driver. For some platforms using mostly uhd 630 (i5-8300h 8th gen Coffee Lake with UHD 630 23 execution units) this driver form canonkong has been proved to be working: Win 7 x64 Coffee Like UHD 630 Video driver (2) You simply use the same method above, remember that you might not need to modify the inf.

EDIT by Fernando: Thread title shortened

#2 RE: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines) by bloodhand 27.04.2020 12:25

Update2: There is a new modified driver released for Coffee Lake/Whiskey Lake platforms released, you can use this is if the other fails: Win 7 x64 Coffee Like UHD 630 Video driver (3)

It seems that the 2 drivers that worked for my computer are designed and modded for the Kaby Lake platform, while the last 2 are for Coffee Lake/Whiskey Lake.

#3 RE: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines) by irinauwood 27.04.2020 12:53

There is a new modified driver released for Coffee Lake/Whiskey Lake platforms released.

#4 RE: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines) by AbsoluteZero 29.07.2020 22:19

Is it possible to inject Nvidia Graphics Drivers into the Win7 installation image instead of Intel Graphics Drivers and still succeed with a pure UEFI installation?

Thanks,

AZ

#5 RE: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines) by bloodhand 30.07.2020 22:16

Yes, if you have only the NVIDIA video card, so no intel as primary video card. In my case the intel uhd is the main video, the NVIDIA is only for acceleration when needed.

#6 RE: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines) by AbsoluteZero 06.08.2020 22:06

Zitat von bloodhand im Beitrag #5
Yes, if you have only the NVIDIA video card, so no intel as primary video card. In my case the intel uhd is the main video, the NVIDIA is only for acceleration when needed.


But what about booting into Win7 safe mode? Apparently, booting into safe mode does not work, if W7 is installed in pure UEFI/no CSM mode with vga.sys disabled:

Windows 7 x64 on UEFI without Legacy Support/CSM (read the description text of the video)

Installing Windows 7 on the pure UEFI systems without CSM

Post #3

Zitat
In your approach, Safe Mode / Windows Recovery won't work. And BSoDs won't be displayed (computer will just freeze). Also there may be early BSoDs like ACPI_BIOS_ERROR and INACCESSIBLE_BOOT_DEVICE which appear before video driver is loaded, so it's nice to have them as well (with all details included), instead of usual small frozen red dot above "Starting Windows".



Post #5

Zitat
AFAIK, vendor specific drivers could be added to Windows Recovery (winRE.wim) in the same way as it could be added to install.wim.
Incidentally, winRE.wim resides inside install.wim



Zitat
You are right, but I haven't seen accidental BSoD for many, many years. It never happens on properly installed OS (at least never happened to me).
If I see it, I will be almost sure about hardware failure.



Post #10

Zitat
Not sure what you mean in "use its (boot.wim) drivers". After deploying OS ("extracting" OS from WIM/ESD file to target storage media) via official Setup app from ISO or other means, user then boots the OS for 1st time. There is a "device configuration" stage (PnP stage) where devices like (i)VGA are detected and, if they exist in the deployed OS driver store, suitable drivers (native/OEM) are installed. They won't install (will be ignored/rejected, specially in Win x64 scenarios) if they don't meet the described properties.



Zitat
Some users like to boot in Safe Mode to DDU VGA drivers. Other scenarios might be borderline, I have to agree here, but as I've said having it available is better than not.




Why is that so?

On my W7, booting into safe mode HAS TO WORK - it's an absolute imperative!

AZ

#7 RE: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines) by IntiMD 06.08.2020 22:50

avatar

https://forums.mydigitallife.net/threads...-devices.82137/
New way to get to install and run 7 on class 3 devices

#8 RE: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines) by bloodhand 07.08.2020 10:35

Zitat von AbsoluteZero im Beitrag #6

Why is that so?

On my W7, booting into safe mode HAS TO WORK - it's an absolute imperative!

AZ


I know all this, but it's not a problem for me. Like I said in the comment of the youtube video, if my Win7 fails or runs unproperly, I have a Ghost image with the backup of the C drive which I restore using bootable USB. I know I get sometimes BSODs from my video card (black screen suddenly), but that is because of the modified unofficial driver, so there is no solution for that.

Zitat von IntiMD im Beitrag #7
https://forums.mydigitallife.net/threads/uefiseven-easily-boot-windows-7-on-uefi-class-3-devices.82137/
New way to get to install and run 7 on class 3 devices

It seems similar to this: https://forums.mydigitallife.net/threads...sm.80876/page-2 . A VGA/INT10H emulator so you can install win7 and boot normally, then install video driver. I didn't bother to try it, I have my installation up and running for more than one year, with most recent updates from that moment integrated, I don't use windows update (because it simply doubles of triples the installation size and everything runs slower afterwards) and as I said as something goes wrong I got the backup of a clean installation with everything I need already configured. I will surely try these methods when I will need to reinstall from scratch with the newest updates integrated. Good to know there are 2 of them already.

#9 RE: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines) by AbsoluteZero 19.08.2020 18:36

Zitat von bloodhand im Beitrag #8
Zitat von AbsoluteZero im Beitrag #6
Why is that so?
On my W7, booting into safe mode HAS TO WORK - it's an absolute imperative!
I know all this, [...]
So, can you CONFIRM that W7 safe mode STILL WON'T WORK even when an Intel or AMD/Nvidia driver is correctly integrated into a W7 installation image?

If that's so, what are Win8 and later Windows OS'es doing different during safe boot than Win7, so they work but Win7 does not??

By the way: is the install.wim of Win10 exactly the same as the one of Win7 (I guess not...), and if not, what are the important differences between the two OS'es? Do I also need to use the boot.wim of W10 in order to achieve a a pure UEFI install of W7 or would install.wim alone suffice?

Thanks for any responses in advance,
AZ

#10 RE: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines) by bloodhand 19.08.2020 21:26

Win10 uses another standard vga mode, which is directly compatible with uefi. That cannot be ported to win7,it's just different from scratch built.

Win7 safe mode, bsod, boot depends on this vga which is non uefi compatible. Uefiseven emulates the int10 csm necessarry for this to work on pure uefi.

#11 RE: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines) by bloodhand 24.08.2020 22:19

I also updated my current existing installation with uefiseven to test it: recopied vga driver, reenabled vga in registry and bcd and installed uefiseven. It works perfectly, I only have to figure out why do i still have to press enter 2 times before seeing the boot logo, even if I also copied the skiperrors file...

#12 RE: [GUIDE] How to install Windows 7 x64 on Acer Spin 5 laptop (guide can be adapted to more UEFI class 3 machines) by bloodhand 01.06.2021 11:48

Since @manatails couldn't figure out what the issue was so that I had to press 2 times enter, I tried my luck with vgashim by driver1998 and it works with no issues.

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