I would suggest you to follow these steps:, You will find that your computer problem has been solved very quickly.
1.Turn on your PC and press F2, then select CD or DVD, it will start loading its files, later you can see a window like below, you can select languge and click on Install now.
2.There will be a agreement license, select Agree. Select custoem(advanced) next create a new drive, click on drive and then click new, a new dirve can be created and you can see a window below.Choose any drive you want to install window. Click Format and Next to proceed.
3. When installing, don't plug in or off your device.After it installed, your pc are been rebooted and you can see a User Setting, just type your name and password. Then click on Next and a new window open.In this step you must activate your windows, add a Product Key and click OK.
1.Click Start, and enter into Control Panel.
2.Then choose Programs and Features.
3.After you enter in, you can see all your programs listed, right click the software you don't want.For example.I don't like 7-Zip 16.02(x64).I right click it and click Uninstall and a small window open, choose Uninstall again.