If you have a PC with Windows 8 but miss the old Windows 7, you can bring back the Start Menu and the Aero Glass theme with the title bar and window borders that are transparent and hide new elements like the "Charms" menu. Here are some ways to make Windows 8 look like Windows 7.
Step
Method 1 of 3: Installing a Start Menu Replacement

Step 1. Visit Classic Shell on Classicshell.net
This is a free program, which can bring back the Start button in Windows 7.

Step 2. Click the "Download Now" button

Step 3. See that the download runs automatically
Be careful not to click on another "download" button, which can install unwanted programs on your computer.

Step 4. Click "Run" when prompted

Step 5. Accept the license agreement

Step 6. Choose from a wide variety of features, such as Classic IE9, Classic Start Menu and Classic Explorer

Step 7. Click "Install
" Wait for the installation to complete.

Step 8. Click “Finish
”

Step 9. Notice the new display changing to the old Microsoft Start logo

Step 10. Click "Start" and select "Basic settings" or "All settings
" Now you can browse the program layouts and settings that you are already familiar with.
Method 2 of 3: Disabling Some Windows 8 Features

Step 1. Download the free tool called Skip Metro Suite at skip-metro-suite.en.softonic.com/

Step 2. Click "Download
" Don't click another "Start Download" button, which will install other unwanted programs.

Step 3. Install the program

Step 4. Run the program

Step 5. Tick “Skip Start Screen
”

Step 6. Disable other Windows 8 features that you don't like, like the Charms Bar

Step 7. Save your settings
Method 3 of 3: Enabling the Aeroglass Theme

Step 1. Right-click on the Windows 8 desktop and select "Personalize
" The Personalization window will open.

Step 2. Make sure that the default Aero theme is applied
Otherwise, apply the Aero theme.

Step 3. Click "Window Color" at the bottom of the window

Step 4. Keep the Color and Appearance window open and don't click on anything inside

Step 5. Right-click your desktop again and select "Personalize" again to open a second Personalization window

Step 6. Click the "Windows Basic" theme to apply the Aero Lite theme

Step 7. Go to the Personalization window that you opened earlier

Step 8. Uncheck the "Enable transparency" option then check again

Step 9. Click the "Save changes" button
You will now have the AeroGlass look in the Aero Lite theme.
Tips
- If you decide to return to the Windows 8 view as before, without the Start button and Start menu, click Start, Control Panel and Programs and Features. Look for Classic Shell in the list, and click on it to delete it.
- There are several other programs you can install to make your computer feel like Windows 7. Start8 is a cheap program, which you can customize to your liking. Pokki is another program that can restore the Start button and there's also a built in app store, which contains lots of free apps.