Windows 7 won't boot after installing Ubuntu

jtech95 · Aug 20, 2013

Hello all,

I recently installed Ubuntu 13.04 on my machine which already had Windows 7 installed on it. I wanted to run Linux and Windows side by side, so I picked the "Install them side by side, choosing between them each startup" option on the Ubuntu installer.
Ubuntu installed fine, however when GRUB comes up and gives me the choice of operating system and I select "windows 7", the computer just restarts and takes me right back to GRUB. Can't even access "Safe Mode" or anything like that. Help!

Guest · Aug 20, 2013

Hey man, if you're running a dual BIOS device, then try switching to the other. I have Windows 8 and LMDE on my system, and to boot up Windows, I have to chose UEFI Bios while Linux I need to run with Legacy

stillblue · Aug 21, 2013

jtech95 :

First make sure you are clicking on the right windows option as there may be more than one. The correct one is "Windows Loader"

If that didn't solve it

From a terminal type sudo grub-update to reinstall grub configuration.

Then check that windows is still there by booting to Ubuntu and checking the windows folder, just in case you accidently did something to it. Since it is showing up in Grub I shouldn't think that's the problem.

Next I'd try boot-repair to fix the boot.
sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update
sudo apt-get install -y boot-repair && (boot-repair &)
For info on boot-repair go to https://help.ubuntu.com/community/Boot-Repair
Use the recommended repairs settings.

If that still didn't get it you probably lost the windows loader and will have to reinstall that. MS has instructions for doing that. Be aware though that if you do that it will erase your Ubuntu loader and you need to have a live Ubuntu USB handy to get it back, preferably one with boot-repair on it.

What sheepyxD said can be true but only if your windows was installed as a UEFI in the BIOS and you changed to legacy in the BIOS prior to installing Ubuntu. If you didn't change the BIOS that should not have happened. But yes, they have to be installed under the same system or you have to switch between legacy and UEFI in the BIOS every time you wish to switch systems. If you did that switch back to windows and reinstall Ubuntu and you're good to go.

jtech95 · Aug 22, 2013

stillblue :

jtech95 :

First make sure you are clicking on the right windows option as there may be more than one. The correct one is "Windows Loader"

If that didn't solve it

From a terminal type sudo grub-update to reinstall grub configuration.

Then check that windows is still there by booting to Ubuntu and checking the windows folder, just in case you accidently did something to it. Since it is showing up in Grub I shouldn't think that's the problem.

Next I'd try boot-repair to fix the boot.
sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update
sudo apt-get install -y boot-repair && (boot-repair &)
For info on boot-repair go to https://help.ubuntu.com/community/Boot-Repair
Use the recommended repairs settings.

If that still didn't get it you probably lost the windows loader and will have to reinstall that. MS has instructions for doing that. Be aware though that if you do that it will erase your Ubuntu loader and you need to have a live Ubuntu USB handy to get it back, preferably one with boot-repair on it.

What sheepyxD said can be true but only if your windows was installed as a UEFI in the BIOS and you changed to legacy in the BIOS prior to installing Ubuntu. If you didn't change the BIOS that should not have happened. But yes, they have to be installed under the same system or you have to switch between legacy and UEFI in the BIOS every time you wish to switch systems. If you did that switch back to windows and reinstall Ubuntu and you're good to go.

Boot repair did it. Thanks a lot!!!

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Windows 7 won't boot after installing Ubuntu

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