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: cannot install win7 64 on uefi system

14 Jun 2014   #1
uefi newbie

win 7 Ultimate 64bit
 
 
cannot install win7 64 on uefi system

Hello guys 1st post but i think this site may be able to help me out. I have been in IT for 17 years but i must admit this has me stumped. I have tried with Windows dvd and also I created a 64bit usb. Same issue with both, I have followed the steps for fresh install on uefi. It will load the 1st part fine, when it reboots to finish the windows install it comes up with the black windows boot manager Window saying unexpected error. If I try to do a Windows repair it says it cannot repair. It says failure during setup.

If I try to install via legacy mode it installs fine, but I want to use uefi because I'm using a 3tb drive and in legacy mode I lose to much space of unusable drive.

I have asus z87a mb, I have tried with secure boot on and off. If anyone can help I would appreciate it.i have spent 3 days jacking with this. I may try to use smaller drive see if it works. ..I dunno at this point.
Thx


My System SpecsSystem Spec
.
14 Jun 2014   #2
gregrocker

 

Secure Boot is only for Windows 8 so it must be turned off. Then if you have CSM test whether it needs to be enabled to install Win7. If not look for Legacy BIOS or Legacy Boot. Showing us camera snaps of all related settings showing expanded choices can help a lot - attach files using paper clip in reply box.


Are you booting the media as a UEFI device and deleting all partitions to install? Try the other steps in Overcoming Windows 7 Installation Failures including downloading a new installer ISO and writing to stick with Option One of UEFI Bootable USB Flash Drive - Create in Windows.
My System SpecsSystem Spec
14 Jun 2014   #3
uefi newbie

win 7 Ultimate 64bit
 
 

Thank you for your reply. . Sorry I'm so short but I am having to use my phone to post so it's not exactly fun to type lol.
I have tried with secure boot disabled still same issue.i have tried 2 different install dvd's as well as 64bit usb. I have used diskpart to clean drive, convert to gpt and let windows format as well as using diskpart to set up partitions. Still have not been able to install. I have set bios to default and disabled secure boot, made sure I had it set to boot uefi. I have the latest bios update. I have also tried csm auto and enable. Your saying I need to have legacy boot St to install uefi?
My System SpecsSystem Spec
.

14 Jun 2014   #4
gregrocker

 

Are you booting the DVD's and stick as UEFI devices in Boot Menu?


Where did you get the ISO and how were they burned? Have you yet tried a fresh ISO burned with tool from Clean Reinstall tutorial in my signature pic below?


Can you post back camera snaps of the UEFI -related settings choices in your BIOS? Expand so we can see all choices for each and include any you're unsure of - which may be all of them if necessary.


Legacy Boot is normally if you want to bypass UEFI. You'll know its set to UEFI if your devices are shown as UEFI bootable, and Legacy if they aren't. But this is providing the installers are burned correctly from intact ISO's which is never a sure thing in these cases.
My System SpecsSystem Spec
14 Jun 2014   #5
uefi newbie

win 7 Ultimate 64bit
 
 

Yes I am booting to uefi usb. I will do it over and attach pics of my steps. Doing it now. .
My System SpecsSystem Spec
14 Jun 2014   #6
uefi newbie

win 7 Ultimate 64bit
 
 

Well I have tried to upload some pics but get errors. I did something I have not tried. I unplugged every drive except the drive im installing to, I also set every option in bios I could find to uefi only. It worked! Windows installed. .but weird thing is when I shut down and reconnected all drives back it does same thing. I will try to attach pics and mess with pc
My System SpecsSystem Spec
14 Jun 2014   #7
gregrocker

 

The first step in tutorial is to unplug all other drives during install. Which others did you ignore?

Another drive must be blocking boot. Figure out which by process of elimination
My System SpecsSystem Spec
15 Jun 2014   #8
uefi newbie

win 7 Ultimate 64bit
 
 

Unplug all other drives was the only one i ignore.. Never had issue before with drive connected. I will try one at a time till I figure out which one is blocking the boot.
My System SpecsSystem Spec
15 Jun 2014   #9
uefi newbie

win 7 Ultimate 64bit
 
 

As soon as i try to add any drive I cannot boot. If I unplug the drive it comes back to bios, if I restart again I cannot boot to anything.i actually had to pull cmos battery to even boot to bios. Once I do and reboot I have to run system repair and it tells me system files have been changed. I'm about to just disable uefi boot legacy and just live with loss of hdd space on 3tb drive. I have never had such issues trying to install an os.

I'm running sfc scannow see if it can fix it.
My System SpecsSystem Spec
15 Jun 2014   #10
uefi newbie

win 7 Ultimate 64bit
 
 

Well sfc scannow fixed the boot and now once again it boots to os. What could be causing it to break when I try to add back my hdd's. I have had this up and running once before and it didn't give me all these headaches. Completely new system build 4 months old.i also have a image of prior system configured with uefi and all drives that I am unable to apply.
My System SpecsSystem Spec
Reply

 cannot install win7 64 on uefi system




Thread Tools





Similar help and support threads
Thread Forum
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
Recover system image after clean install using UEFI
First of all i'd like to greet users of this forum, kids and adults, professionals and lamers, geeks and hipsters. Hello my fellow windows seven brothers. Seven is the way to go forever, until windows 9 maybe. Now to the purpose of my registration here and posting. I have windows 7 perfectly...
Installation & Setup
UEFI boot keeps changing; UEFI/Win7 handshaking confusion
Trying to understand handshaking between UEFI & Win 7. Have Win7 Pro sp1 64 installed on SSD, mb=Asus F2A85-V Pro. Example: boot to flashdrive to do Acronis backup of SSD; remove SDD, insert spinner; boot again to flashdrive to do Acronis restore to spinner (to test backup); remove flashdrive, boot...
Installation & Setup
Win7 installation on UEFI system issues
I am having difficulty installing creating a dual boot system. The two OSes are Windows 7 and Ubuntu. The motherboard it's an ASUS P9 X79 Pro that automatically detects if UEFI is available on the DVD or hard drive. I cannot set the system to UEFI. The hard drives are 120 & 128 GB SSD SATA. ...
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
A fresh win7 install over a win7/vista dual boot system ?
Hello all, I have a vaio laptop with a dual boot win7/vista setup. I simply want to format the whole drive back to one large c:\drive, then reinstall windows 7. I have heard horror stories of people saying their boot manager becomes corrupted. or goes missing. I enclose a snapshot of my hard...
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 08:36.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App