Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: does W7 hate UEFI - cannot install - help please

15 Jun 2015   #11
gregrocker

 

Hi Jeannie

Disk management shows no evidence of a UEFI install or system. So if yours is EFI then it must be set to CSM or Legacy BIOS. In some minimal BIOS this will only be determined by whether the installation media is booted as a UEFI or Legacy Device.

When UEFI was in its infancy we often needed to encourage users to install to legacy if there was no firmware update that enables a UEFI install of Windows 7. However gradually the manufacturers caught up and now this has not been necessary in about a years time. So I recommend in most cases doing a UEFI install to experience the full features of the new generation of BIOS.


My System SpecsSystem Spec
.
15 Jun 2015   #12
Lady Fitzgerald

Win 7 Ultimate 64 bit
 
 

I pretty sure my MOBO (ASUS P9X79 WS) doesn't have a legacy BIOS option. I do not recall one and, when digging through my manual (yeah, I kept it and actually read it), it says nothing about a legacy BIOS option.
My System SpecsSystem Spec
15 Jun 2015   #13
genet

Windows 8.1/10 x64
 
 

If you have an old Asus motherboard, then there are no CSM and Secure Boot settings and then you won't be able to install Windows 7/8/10 in UEFI boot mode.

does W7 hate UEFI - cannot install - help please-asus-uefi-bios-utility-1.png

The Asus motherboard CSM and Secure Boot settings. -> link

Here is info about UEFI Boot Mode (installing using the GPT partition style) and Legacy BIOS Boot Mode (installing using the MBR partition style): link


My System SpecsSystem Spec
.

16 Jun 2015   #14
Lady Fitzgerald

Win 7 Ultimate 64 bit
 
 

Then how on earth was I able to install Win 7 on a MOBO that doesn't have a legacy BIOS, just UEFI BIOS?
My System SpecsSystem Spec
16 Jun 2015   #15
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Quote   Quote: Originally Posted by Lady Fitzgerald View Post
Then how on earth was I able to install Win 7 on a MOBO that doesn't have a legacy BIOS, just UEFI BIOS?
That is possible only when there is legacy boot option for ODD/USB; and windows is installed using that legacy option.

If it is UEFI only, then the partition table should have three hidden partitions of total 528 MB as displayed by genet.

Some UEFI boards (may be all, I am not that much aware of it) offer this option, which installs an earlier OS keeping UEFI aside. If the installer is booted normally, it results the situation that you explained in your post #10, the installer formats the HDD/SSD as MBR. Here UEFI is useless.

If you want to use UEFI, you have to boot the installer as UEFI, using the boot menu key. Then the installer formats the HDD/SSD as GPT.

I should not tell you, you definitely know it, that the Legacy BIOS is not a single option to opt for, but a combination of various options in the advanced settings in the UEFI/BIOS.
My System SpecsSystem Spec
16 Jun 2015   #16
gregrocker

 

Quote   Quote: Originally Posted by Lady Fitzgerald View Post
Then how on earth was I able to install Win 7 on a MOBO that doesn't have a legacy BIOS, just UEFI BIOS?

Quote   Quote: Originally Posted by gregrocker View Post
In some minimal BIOS this will only be determined by whether the installation media is booted as a UEFI or Legacy Device.
It may come down to the selection of Legacy DVD or flash stick for install.
My System SpecsSystem Spec
16 Jun 2015   #17
Lady Fitzgerald

Win 7 Ultimate 64 bit
 
 

I'm still confused; there is absolutely no mention of "legacy" of any kind in my manual or in the UEFI BIOS. My installation works and I'm a "if it ain't broke, don't fix it" kind of girl.
My System SpecsSystem Spec
16 Jun 2015   #18
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Your installation is fine, no fixing is needed.

But if you want to give UEFI a go, then that would be a good try. Though it will not cause a big difference with windows 7.
My System SpecsSystem Spec
16 Jun 2015   #19
gregrocker

 

Can we see pics all of your BIOS' tabs? This often settles it since some UEFI related settings are masked or unclear.
My System SpecsSystem Spec
16 Jun 2015   #20
Lady Fitzgerald

Win 7 Ultimate 64 bit
 
 

Quote   Quote: Originally Posted by gregrocker View Post
Can we see pics all of your BIOS' tabs? This often settles it since some UEFI related settings are masked or unclear.
I would rather not. My computer is recording movies right now. I don't really have time today, anyway, because I have to prepare for a 10-12 hour power outage tomorrow and the temperature is going to be at least 110F. You would think, in a megalopolis like the Phoenix area, dry ice would be easy to find. I can remember when every grocery store had it.

You can download the manual here.
My System SpecsSystem Spec
Reply

 does W7 hate UEFI - cannot install - help please




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Win 7 install to UEFI / GPT
Hi I have an Acer Aspire e1-522 with Windows 8.1 64 bit installed and runs fine under UEFI / GPT. I want to install Windows 7 running under UEFI / GPT, is this possible please? As I eventually want to dual boot 7 & 8 64 bit. I have attempted to install 7 x 64 bit various methods by (in no...
Installation & Setup
Asus N76 UEFI - W7 64 Install Hangs on Logo (DVD UEFI Boot)
**** This issue has been resolved **** **** Look at Page 4, posts 4 and 5 **** **** You need to enable Legacy MBR by Enabling Launch CSM in the EFI Setup **** Hello all, This is my first post. I am a Windows 7 user and now (against my will) Windows 8. I bought an ASUS N76 laptop...
Installation & Setup
Cannot install win 8.1 x64, on MBR HDD running Win 7 on UEFI
Hey, I currently have a Custom built computer, based on gigabyte GA-990XA-UD3 mobo. I have a Segate Barracuda 1TB HDD that is currently in MBR format, and is full of data. The mobo uses UEFI. Now, I have read that uefi REQUIRES us to use a GPT HDD to boot up Widows 7/8/8.1. But my HDD, in MBR...
Installation & Setup
UEFI-install from USB don't work
Greetings. I have made a bootable USB-key after this guide http://www.sevenforums.com/tutorials/2432-usb-windows-7-installation-key-drive-create.html When in post, I can select to boot from the USB-key "normal" or as a UEFI-boot If I choose "normal" it boot right away, but if I choose UEFI,...
Installation & Setup
I hate windows 8! How do I re-install 7 and keep programs, files etc?
I bought Windows 8 pro, installed it over Windows 7 pro, and I hate it! How do I downgrade without losing functionality of programs etc.? The upgrade was easy, but I doubt the downgrade will be. Help!!
Installation & Setup
What's the benefit of UEFI and install Windows in UEFI mode?
I am not sure if this subforum is the right place, if not, pleases help me transfer to the right forum... I recently just build a new setup with Asus P8Z77-V LK, this motherboard comes with UEFI boot and legacy BIOS boot support. So I tested install windows 7 in both mode, and I didn't find...
Installation & Setup


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 00:11.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App