PC won't boot into operating system

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Computer__GUY

Computer__GUY

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Dec 15, 2013
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A couple of days ago I changed my motherboard (to a brand new MSI 970 gaming) and my PC case meaning that I had to basically dismantle everything in my old PC case and put into my new one. Everything went smoothly and the computer turns on and boots into the UEFI perfectly. However, the problem occurs when I try to boot into Windows 7. A message always appears saying 'Reboot and select proper boot device or insert boot media in selected boot device and press a key.' I have set my HDD to first boot priority but this message still appears. What can I do to solve this problem?

P.S. I am currently using my old and slow laptop to type this if you were wondering.
 
Solution
faalin
yes it will. if you still have your old computer you can put it back together and pull everything off that you need. Or if you have a second free drive you can install windows to that and then plug your old c drive in as a secondary drive and pull everything off that way.


Any way you go you will need to reinstall windows with a new motherboard. There are ways around it if you get a board that is close chipset wise to the old one, but there are always driver issues that will plague you and a reinstall is always need down the line.
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cverde

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Nov 26, 2014
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Try to force the boot using the boot selection shortcut on post (F11 normaly) and choose your system hard drive. See if it Logs on. Chances are you wont be able to log on in Windows and have to reinstall the OS. Even if it allows you to log on i would reinstall the OS and start with a clean install!
 
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faalin

faalin

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Feb 22, 2012
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you can just pull your HDD out and put it in another computer the drivers are all wrong. Changing out motherboards usually means you will need to reinstall windows and if you have windows 7 oem you will need a new cd key since the last key is tied to the old motherboard.
 
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Computer__GUY

Computer__GUY

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Dec 15, 2013
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My Windows isn't activated at the moment anyway. I have just put in another HDD which went through the exact same problem. I have also tried to force the boot using F11 and that didn't work either. If I were to return the MoBo and got a completely different brand would I have the same issue? Also, I don't have a CD drive so I will need to get one. Faalin, are you saying that I'm going to have to buy a new Windows 7?
 
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Computer__GUY

Computer__GUY

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Dec 15, 2013
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The Windows I have well... Lets just say it's not an official copy. Are you saying that I need to do a completely fresh installation of Windows? Wouldn't that mean that all of my files will get wiped when I format the HDD?
 
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faalin

faalin

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Feb 22, 2012
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41,240
yes it will. if you still have your old computer you can put it back together and pull everything off that you need. Or if you have a second free drive you can install windows to that and then plug your old c drive in as a secondary drive and pull everything off that way.


Any way you go you will need to reinstall windows with a new motherboard. There are ways around it if you get a board that is close chipset wise to the old one, but there are always driver issues that will plague you and a reinstall is always need down the line.
 
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Solution
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cverde

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Nov 26, 2014
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You will need to backup your data before you format and install your OS. You can access your HDD through your laptop with a HDD case, Docking Station or a SATA (or IDE) to USB cable (and power cord if 3,5HDD). Then you backup all your data (don't backup programs or the OS, but you can backup program preferences, favorites, etc). After the backup is done do a complete format and install Windows. After Windows installation install drivers, AV, 7zip, other missing drivers, software and you are good to go - starting cleaner and faster!
 
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