I had an old HP desktop, i7 and windows 7 and I upgraded it. I got a new case, put all the old components in and started up fine. I upgraded my power supply (Corsair AX 760) as well as a asus sabertooth Z77, LGA 1155. I turn on the computer with the same hard drive. Everything in the BIOS is working perfectly, when I go to boot from my hard drive, it says Starting Windows for 2 seconds and then freezes and tells me windows was unable to start. It gives me 2 options, start system repair or boot normally. When I boot normally same thing happened and when I go to system repair it shows my earlier points where I could restore it. I do that and when it loads up same thing. I searched up and people said I have to re-install windows 7 if I have a new motherboard. But shouldn't it be in my hard drive? I bought the computer 2 years ago and it didn't come with a windows 7 disk. Do I need to get a new windows 7 disk and if the install works, will my files still be there?
Help is greatly appreciated, been trying to get it to work for 3 hours.
After changing motherboards it's best to re install windows your issue is:
Most bought systems will come with Windows 7 OEM Which once activated that cdkey is tied to that motherboard. If you've changed motherboard you will need to buy a new Windows 7 CD to activate windows legally