Why Go Back to Windows 7 from Windows 8 or 8.1?
First reason would be familiarity. I mean, look at that picture above. That is your start menu? It takes up the whole screen! AND you still have to navigate through it to find everything. That alone would make many people ask how to go back to Windows 7 from Windows 8 versions. If that is the only issue, then maybe going to Classic Shell will bring back familiarity.
Then there are those live tiles. Constantly changing…updating…well, guess what. That means they are constantly processing and using bandwidth and put a little strain on your resources. Now downgrading to Windows 7 from Windows 8 editions sound like a good idea.
And if you are stuck on Windows 8 and have not upgraded to Windows 8.1, it is obvious that some thing is a little wrong. Not even a start button command on the interface. Did they forget that people use a mouse and keyboard? Yes! The push for touch screen and to catch up to mobile devices and tablets had Microsoft focusing s much on those devices, they ignored the good old fashioned computer. It is extra unfortunate as they seemed to have completely given up on Windows Phones at this point and given avid Windows users a bad taste. If this is the only issue for you, I would highly recommend upgrading to Windows 8.1.
Windows 8 Pro
If you bought a PC with Windows 8 Pro, you may have downgrade rights. This is only available in the PRO edition. There are conflicting reports. Some say you DO NOT need another license key for Windows 7, others say you do, but it does not have to be an unused one. If you have the copy of Windows 7, you can just install it over the Windows 8 directly and NOT have to reformat everything. You will NEED to call Microsoft to activate it over the phone. This WILL NOT work online due to the activation license. Normally, you can only have one machine active per key, and this does not follow the same rules. The call makes it happen.
In all other editions or scenarios
The unfortunate solution is the clean install. If this was an upgrade, your computer most likely came with Install discs. One of them came with the previous OS and the license key should be in an obvious place. Put it in and it should work. If not, there are Windows 7 ISO files available. You will need the activation key though. You can use Microsoft’s site (and need the key to get the download) or you can use other resources, and put in the key later. If you kept your manual or box, it is usually there. If that is all gone, luckily, you can still buy a copy of Windows 7 Pro and Windows 7 Home editions relatively cheap. As with any clean install BACK THINGS UP!!!