How to reinstall windows os

Step 1. You need to use a working computer to do this if yours won't boot into Windows. Then boot from the USB drive. Then, specify preferred language, time and currency format, and the keyboard or input method and click Next. Step 5. Follow the on-screen instructions to complete the setup configurations and let it install.

The installation process will start and your PC will reboot. During the installation, it will ask you to input a product key for Windows activation.

You can choose to skip it or not. If you skip it, you also need to input a product key to activate Windows when the installation is completed. Or there will be a watermark on the Desktop to remind you to activate Windows. After Windows is installed successfully, users need to optimize system by doing some necessary operations. Running programs on misaligned partition will slow down computer programs largely, and running Windows OS on misaligned partition will increase system boot time, access time, shutdown time, and so on.

Therefore, it is quite necessary for SSD or 4k-sector hard disk users to check whether their partitions are aligned after reinstallation is done. Then install it on your computer. Launch MiniTool Partition Wizard to get its main interface. Select the system disk and click Align All Partitions from the left action panel, which will detect the entire disk and then tell you how many partitions to align in total.

MiniTool Partition Wizard will tell you how many partitions need to be aligned. Click OK to continue. If all partitions on the disk are already aligned, MiniTool Partition Wizard will tell you that the disk does not need to change partitions alignment. As we know, temporary files, caches, Windows updates, and some programs will be saved to system partition automatically, which may make the very partition run out of space in one day.

Therefore, it is very necessary to enlarge the system partition if it does not have much free space left. Moreover, allocating more space to system partition will make Windows run more smoothly. Well, how to extend such a partition? Firstly, open Windows Disk Management tool to get its main window. Then, right click the boot partition to see whether Extend Volume feature is available.

If it can be chosen, enlarge the partition by following instructions. If the option is grayed out, turn to the professional partitioning tool MiniTool Partition Wizard since it can enlarge system partition by taking free space from any other existing partition or unallocated space on the same hard disk.

Select the system partition and choose Extend Partition. Select an existing partition or unallocated space on the same disk to take some free space, and then drag sliding button to decide how much space to take. Then, click OK. Click Apply button on the upper left corner to allow the pending operations.

If the computer was already on, reboot it now that the USB drive is attached. Click Troubleshoot. A list of options will appear. Click Recover from a drive. This will wipe all data off the PC and install a fresh version of Windows Follow the on-screen instructions to complete the installation. Method 3. Go to the Microsoft software download site on a working computer.

Click Download tool now. A file manager window will appear. Click Save to download the tool. It may take several minutes for the download to complete.

Double-click the downloaded tool. It should be in the Downloads folder. You may have to click Yes or Allow to run the tool. Review the agreement and click Accept. Select Create installation media and click Next. Windows 10 will now download to the computer. Click Accept when prompted. This downloads additional updates for the installation media.

Follow the on-screen instructions to create installation media. Once the media is created, remove the drive or DVD from the working computer. Connect the installation media to the PC on which you want to reinstall Windows. The PC will boot from the inserted media and start the install process.

Select your language and other preferences and click Next. The options may vary depending on your location. Click Install now. If you upgraded to Windows 10 from an earlier version for free or purchased Windows from the Microsoft Store, click Skip.

Windows will activate itself automatically once installed. Accept the terms and click Next. The remaining steps will walk you through the installation process. Follow the on-screen instructions to reinstall Windows. Does installing Windows in one partition erase data from the other partition i. It depends on the settings that you choose. You have to download Media Creation Tool, run it and follow on screen instructions. How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site.

Andre for Directly Independent Advisor. I'm here to help you with your problem. When you upgraded from a previous version of Windows or receive a new computer preinstalled with Windows 10, what happened is the hardware your PC will get a digital entitlement, where a unique signature of the computer will be stored on Microsoft Activation Servers.

The Windows 7 or Windows 8 genuine license you were previously running will be exchanged for a diagnostics key. Anytime you need to reinstall Windows 10 on that machine, just proceed to reinstall Windows It will automatically reactivate. You will prompted to enter a product key a couple times through the installation, click I don't have a key and Do this later. Go to a working computer, download, create a bootable copy, then perform a clean install. Once your computer is set to boot from the DVD, you should see this option.

If you are installing from a retail Windows 10 USB thumb drive, you will be asked to select either 32 or 64 bit Windows The Windows logo will appear on screen, this might be here for a while, as long as you see the animating dots, everything should be ok.

Select your Language, Time and Keyboard method then click Next. Click Install now Windows 10 setup will prompt you for a product key during installation a couple times. If you have a Windows 10 product key, you can proceed to enter it. Setup will also prompt you to select the edition you have a license for - Home or Pro. Please make sure you choose the right edition. If you choose the wrong edition, your only option will be to perform a clean install again.

The copy of Windows 10 you download and upgrade from will correspond with the edition of Windows you have installed, if it does not, this is why you might be experiencing problems activating: Windows 7 Starter, Home Basic, Home Premium, Windows 8. You might get a driver missing error or something to that effect. If you do, restart setup, but this time, when you arrive at the following screen, disconnect your thumb drive then go through Custom options. When setup is ready copy files, it will prompt you to reconnect the installation source your USB.

Select the drive then click New NOTE: If you have multiple partitions listed, select each one starting at the bottom , then click delete until there is only a single one unallocated drive displayed in the window. Select the unallocated drive listed, click New, click Apply then OK This will split the drive into multiple partitions, select the Primary partition then click Next.

NOTE: The System Reserved partition is where recovery files are kept for diagnostics and repairing damaged Windows 10 files; or even reinstall Windows