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Windows 7: "operating system not found" message when trying to install windows 7

07 May 2013   #1
lalala87

windows 8
 
 
"operating system not found" message when trying to install windows 7

a friend of mine has a sony vaio laptop with windows 8 on it,but she wants windows 7(plus there is a problem with the laptop,the internet eplorer doesnt open,the window opens for half a second and then closes,and no internet-related application works).i first used a boot usb,configured the bios so that it boots from external devices first and then used the assist button on the laptop to make it manually boot from an external device.the message"operating system not found " came up.then i extracted the iso to an external hard drive to boot it form there and the same message came up.i even burned the image to a dvd and made it boot from the optical drive,but the same message came up.what can i do?or is there some hardware problem which also explains the internet applications not opening?thnx in advance


My System SpecsSystem Spec
.
07 May 2013   #2
gregrocker

 

It requires disabling Secure Boot first to upgrade a Win8 PC to Win7: UpDowngrade Windows 8 to Windows 7.

Then follow these special steps to install to UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums

or Bypass UEFI to Install WIn7.

To understand UEFI better so you can choose, watch this video: Technical Note: UEFI BIOS vs. Legacy BIOS - YouTube

You need a bootable DVD or flash stick installer which is provided in these same steps that will show you how to get and keep a perfect Clean Reinstall - Factory OEM Windows 7. To use flash stick installer there are also these special steps for UEFI Bootable USB Flash Drive - Create in Windows
My System SpecsSystem Spec
07 May 2013   #3
lalala87

windows 8
 
 

oh thnx,thats a lot,but i will do it slowly and steadily.thnx,that was a quick reply
My System SpecsSystem Spec
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07 May 2013   #4
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Quote:
a friend of mine has a sony vaio laptop with windows 8 on it,
Is a new SONY with Windows 8 Pre-installed?
My System SpecsSystem Spec
07 May 2013   #5
lalala87

windows 8
 
 

i disabled the secureboot,but cant boot from my dvd,i searched and there is no boot mode on the vaio's.you have to prss the assist button and select "boot from an external device".i do that but still operating system not found.any help?i know the answer might be ion your link but im literally lost,there is a ton of stuff,hahahah
My System SpecsSystem Spec
07 May 2013   #6
lalala87

windows 8
 
 

Quote   Quote: Originally Posted by theog View Post
Quote:
a friend of mine has a sony vaio laptop with windows 8 on it,
Is a new SONY with Windows 8 Pre-installed?
yes
My System SpecsSystem Spec
07 May 2013   #7
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Quote:
what can i do?or is there some hardware problem
Downgrading to Windows 7 will not repair hardware problem?

Check the NETWORK card drivers are installed.

How do I downgrade my OEM Windows 8 to Windows 7 P... - Sony Community

Quote   Quote: Originally Posted by PeterT
Currently we do not have any support for Windows 8 downgrade to Windows 7 at this moment. We are investigating this area and drivers to see if this is possible. We should have some kind of an update by Jan or Feb 2013 in terms of what model is eligible or not.


Sony Community Manager
Sr. Software Engineer
Peter Tat





Sony eSupport - Windows® 7 Clean Install Instructions for Windows® 8 PCs

Quote   Quote: Originally Posted by Sony
1.With the computer powered off, press the Assist button to enter the VAOCare Rescue Mode Boot screen.
2.Select the ‘Start BIOS setup [F2]’ option to proceed to the system BIOS.
3.Once inside the InsydeH2O Setup Utility, use the arrow keys to select the ‘Boot’ list.
4.With the ‘Boot Mode’ option selected, press enter to change the setting from UEFI to Legacy. or (UEFI/Legacy if a option)
5.Use the arrow keys to proceed to the ‘Exit’ menu.
6.Select the ‘Save Changes’ option and press Enter.
7.After saving the changes, select Shutdown.
My System SpecsSystem Spec
07 May 2013   #8
lalala87

windows 8
 
 

Quote   Quote: Originally Posted by theog View Post
Quote:
what can i do?or is there some hardware problem
Downgrading to Windows 7 will not repair hardware problem?

Check the NETWORK card drivers are installed.
well it connects to the internet through the list of available networks,i just cant open any browser or use any internet related application like one about the weather
My System SpecsSystem Spec
07 May 2013   #9
gregrocker

 

If this is a new PC then you have one year free Tech Support where they should either resolve your internet problems or replace the PC.

It may still be within the store's return policy.

If you still want to install Win7 and can't boot from the DVD, make sure you are following the steps for install to UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums .

Where did you get the DVD? Did you burn it yourself? If so confirm the ISO and burn another using ImgBurn at 4x speed.

If you watched the video and understand the small benefits of UEFI and want to try to Bypass UEFI to Install WIn7 this usually resolves these problems.
My System SpecsSystem Spec
07 May 2013   #10
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Quote   Quote: Originally Posted by lalala87 View Post
Quote   Quote: Originally Posted by theog View Post
Quote:
what can i do?or is there some hardware problem
Downgrading to Windows 7 will not repair hardware problem?

Check the NETWORK card drivers are installed.
well it connects to the internet through the list of available networks,i just cant open any browser or use any internet related application like one about the weather
Are you connecting to your wireless network ?
& not someone's wireless network in your street.
My System SpecsSystem Spec
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 "operating system not found" message when trying to install windows 7




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