How to Wipe a Computer and How to Delete Everything on Windows 7/10

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Brithny updated on Jan 14, 2021 to Computer Instruction | How-to Articles

"I just bought a used Windows 7 computer from a yard sale. It has a bunch of stuff on it, which I don't need or would use. How to delete everything on Windows 7 to start from scratch? Or how can I wipe the computer and restore it to a factory-fresh state?"  

When you buy a second-hand computer with data, decide to sell/give your computer to others, or your computer is full of trashes and becomes slow, you may want to delete everything off the computer on Windows 7/8/10.

To wipe a computer in Windows 7 or Windows 10, you can restore to factory settings, which allows you to keep the system but erase all personal data. If you'd like to delete everything on Windows 7 without CD, including the Windows system and data, you can make it in the way below.

Wiping and factory resetting will erase all the data on your computer, which means unrecoverable. Back up and save all important documents and files to an external disk, flash drive, or cloud storage system.

How to Wipe a Computer Windows 7 Without CD, Including Windows System & Personal Data

How to delete everything on Windows 7 without CD, including the Windows operating system and personal files? Although Windows doesn't provide a feature for wiping data, you can erase all Windows laptop and PC data with a third-party tool, like EaseUS Todo Backup.

EaseUS Todo Backup is a comprehensive program that deletes all the data from a Windows OS computer with its "Wipe Data" function. You can wipe your system drives and other partitions with a WinPE bootable USB, letting your computer leave nothing behind and never recoverable.

Download this data wiping tool and learn how to delete everything on Windows 7 with a step-by-step guide.

  Free Download

Support Windows 10/8.1/8/7/Vista/XP

1. Create a WinPE Bootable Disk

EaseUS Todo Backup supports boot disk types of a USB drive, CD/DVD disc, and an ISO file.

  • EaseUS Todo Backup emergency disk lets you restore your computer from one backup when Windows becomes unable to boot normally, with which you can restore operating system and files without booting into Windows.

Step 1. Prepare an empty USB or CD/DVD drive. (Remember to empty or clear your USB or CD drive. If you saved data on it, move them to another safe location.)

Step 2. Connect USB/CD/DVD to your Windows PC.

Step 3. Run EaseUS Todo Backup and click "Create Emergency Disk" in "Tools" on the left pane.

Select to create emergency disk.

Step 4. Choose "USB" or "CD/DVD" as the disk location for creating to WinPE disk so as to boot up the computer when the Operating System fails to boot or computer dies.
Step 5. Click "Proceed" to start creating the WinPE disk to your USB or CD now.

Create WinPE disk to USB/CD.

2. Wipe Windows 7 Computer to Delete Everything

After successfully creating the bootable disk, you can boot the computer, press Del to enter DOIS, and set "USB Boot Device" as the first boot device. Then, you can use EaseUS Todo Backup to erase your computer, including the system and data drives. 


The wipe data operations cannot be undone after applying the changes. Please be careful that once the operation is carried out by EaseUS Todo Backup, the data will not be recovered by any data recovery software! Once you decide to wipe your partition or disk, your data will disappear forever.

Step 1. Download EaseUS Todo Backup for wiping data.

run EaseUS Todo Backup

Step 2. Launch the program, select the "Tools" button and Choose "Wipe Data"

click wipe data option

Step 3. Select the partition or disk that you want to erase data, and set erase times.

select the disk or partition to erase or wipe data

Step 4. Click "Proceed" to wipe data and wait until it finished

wait for the process to finish
  Free Download

Support Windows 10/8.1/8/7/Vista/XP

Reinstall Windows 7 or Windows 10 for Reuse

After completely wiping your Windows 7 computer, you can reinstall the system for reuse.

To install Windows 7: Download Windows 7 Disc Images (ISO Files) and follow the instructs to complete the task.

To install Windows 10: Download the media creation tool from Microsoft and finish the clean installation.

EaseUS Todo Backup enables users to create and restore system image to a different computer to migrate OS without reinstalling. Check details if you are interested.

How to Delete Everything on Windows 7/8/10 by Restoring to Factory Settings

If you want to keep the clean Windows system on your computer as when you bought it, but need to wipe user accounts, personal files, customized settings, programs, and data to make it unrecoverable for privacy reasons, you can do it by restoring to factory settings.

The ways to factory reset vary on different systems, read the following content, and learn how to delete everything on Windows 7 or Windows 10 with or without installation CD/DVD.

How to Restore Windows 7 to Factory Settings

To delete everything on Windows 7 and reset your computer to the factory state, you have to use an original Windows 7 installation media or recovery disk. If you don't have the disc, you will need to contact the computer manufacturer to order a new restore disc or skip to see how to delete everything on windows 7 without a CD.

Some computer factory settings will erase entire disk data, while others only restore the system and retain data saved other partitions. If it is the latter, you need to use a data eraser tool to delete all the data after the factory defaults completely.

Restore Windows 7 with Installation CD/DVD 

Step 1. Insert the Windows 7 installation CD in the CD-ROM drive and restart the computer.

Step 2. Press F8 repeatedly to open the Advanced Boot Options menu. At the Advanced Boot Options screen, choose "Repair Your Computer" and press Enter. This opens the System Recovery Options menu.

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Step 3. Choose System Restore or Startup Repair (if this is available).

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Step 4. Follow the on-screen instructions to continue with any operation.

Restore Windows 7 to factory settings without CD

If no install CD or DVD is available, you can boot into Safe Mode and run System Restore with Command Prompt.

Step 1. Turn on the computer. Press and hold the F8 key.

Step 2. Choose "Safe Mode with Command Prompt" at the Advanced Boot Options screen and press Enter.

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Step 3. Log in as Administrator.

Step 4. When Command Prompt appears, type rstrui.exe and press Enter.

Step 5. Follow the wizard instructions to finish System Restore on Windows 7.

How to Reset Windows 8/8.1 to Factory Settings to Delete Everything

Windows 8 can be restored to factory settings by either performing a "refresh" of your PC (without removing your files) or by performing a "reset" (this deletes personal files from your computer).

Step 1. Go to "Settings". Click "Change PC settings" > "General" > "Remove everything and reinstall Windows" > "Get started". If your operating system is "Windows 8.1", click "Update and recovery" > "Remove everything and reinstall Windows".

delete everything on Windows 8 - 1

Step 2. Click "Next". Note: All your personal files, settings, and apps will be removed.

Step 3. Select the drives from which you want to remove files. Here, you can select your system drive.

Step 4. Choose "Just remove my files" or "Fully clean the drive". Click "Reset" to reset your PC.

delete everything on Windows 8 - 2

How to Reset Windows 10 to Factory Settings to Delete Everything

Resetting Windows 10 can delete everything on your Windows 10, including personal data.

Step 1. Go to "Settings". Select "Update & security" > "Recovery" in the left pane > "Get started" under "Reset this PC".

Step 2. Click "Keep my files" or "Remove everything". Here, to restore a clean Windows, choose "Remove everything".

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Step 3. Select "Just remove my files" or "Remove files and clean the drive". Cleaning the drive takes a lot longer. If you are giving the computer away, choose the latter one; while keeping the computer, choose the first one.

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Step 4. Click "Next" > "Reset" > Continue when prompted. Windows will then restart and take several minutes to reset.

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To Sum Up

To delete everything on Windows 7 or Windows 8/10, you have two ways to do it:

Way 1. Use EaseUS Todo Backup Bootable USB to wipe the whole disk without CD, including the Windows and personal files. With this program, you can simply wipe your computer entirely with a few clicks.

Way 2. Restore Windows 7 to factory settings to its original configuration as it first was when it was purchased. This solution is a bit more complicated. Restoring factory settings often doesn't erase your data thoroughly; you still have to use a data wiping tool to delete everything on Windows 7/8/10.

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