Disk cleanup (Windows 10 S (2017),Windows 10 (2015) - MS Version 6.4,Windows 8/8.1 (2012-2013) - MS Version 6.2/6.3,Windows 7 (2009) - MS Version 6.1,Windows Vista (2006) - MS Version 6.0)

Delete temporary files:

In the search box on the taskbar, type

disk cleanup, and select Disk Cleanup from the list of results.

Select the drive you want to clean up, and then select

OK.

Under Files to delete, select the file types to get rid of. To get a description of the file type, select it.

Select OK.

  • If you need to free up more space, you can also delete system files:

In Disk Cleanup, select Clean up system files.

Select the file types to get rid of. To get a description of the file type, select it.

Select OK.

Use the System File Checker tool to repair missing or corrupted system files


Windows 8.1 or Windows 8

swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search. Type Command Prompt in the Search box, right-click Command Prompt, and then click Run as administrator. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.

Windows 10, Windows 7, or Windows Vista

To do this, click Start, type Command Prompt or cmd in the Search box, right-click Command Prompt, and then click Run as administrator. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.

If you are running Windows 10, Windows 8.1 or Windows 8, first run the inbox Deployment Image Servicing and Management (DISM) tool prior to running the System File Checker.

(If you are running Windows 7 or Windows Vista, skip to Step 3.)

Type the following command, and then press Enter.

It may take several minutes for the command operation to be completed.

DISM.exe /Online /Cleanup-image /Restorehealth

Important: When you run this command, DISM uses Windows Update to provide the files that are required to fix corruptions. However, if your Windows Update client is already broken, use a running Windows installation as the repair source, or use a Windows side-by-side folder from a network share or from a removable media, such as the Windows DVD, as the source of the files. To do this, run the following command instead

Fragmentation makes your hard disk do extra work that can slow down your computer. Removable storage devices such as USB flash drives can also become fragmented. Disk Defragmenter in Windows rearranges fragmented data so your disks and drives can work more efficiently. Disk Defragmenter runs on a schedule, but you can also analyze and defragment your disks and drives manually. To do this, follow these steps:

Defragment your hard disk to improve Computer performance

  1. Open Disk Defragmenter by clicking the Start button . In the search box, type Disk Defragmenter, and then, in the list of results, click Disk Defragmenter.
  2. Under Current status, select the disk you want to defragment.
  1. To determine if the disk needs to be defragmented or not, click Analyze disk. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.

    Once Windows is finished analyzing the disk, you can check the percentage of fragmentation on the disk in the Last Run column. If the number is above 10%, you should defragment the disk.
  2. Click Defragment disk.

If you're prompted for an administrator password or confirmation, type the password or provide confirmation.

Make sure Defender is turned on

Turn on Windows Defender to access company resources for error code

Complete the following steps to turn on Windows Defender on your device.

  1. Select the

    Start

    menu.

  2. In the search bar, type

    group policy. Then select

    Edit group policy

    from the listed results. The Local Group Policy Editor will open.

  3. Select

    Computer Configuration

    >

    Administrative Templates

    >

    Windows Components

    >

    Windows Defender Antivirus.

  4. Scroll to the bottom of the list and select

    Turn off Windows Defender Antivirus.

  5. Select

    Disabled

    or

    Not configured. It might feel counter-intuitive to select these options because the names suggest that you’re turning Windows Defender off. Don’t worry, these options actually ensure that it’s turned on.

  6. Select

    Apply

    >

    OK.

Turn on real-time and cloud-delivered protection

Follow the steps to turn on real-time and cloud-delivered protection. Together, these antivirus protect you from spyware and can deliver fixes for malware issues via the cloud.

  1. Select the

    Start

    menu.

  2. In the search bar, type

    Windows Security. Select the matching result.

  3. Select

    Virus & threat protection.

  4. Under

    Virus & threat protection settings, select

    Manage settings.

  5. Flip each switch under

    Real-time protection

    and

    Cloud-delivered protection

    to turn them on.

If you don’t see these options on your screen, they may be hidden. Complete the following steps to make them visible.

  1. Select the

    Start

    menu.

  2. In the search bar, type

    group policy. Then select

    Edit group policy

    from the listed results. The Local Group Policy Editor will open.

  3. Select

    Computer Configuration

    >

    Administrative Templates

    >

    Windows Components

    >

    Windows Security

    >

    Virus and threat protection.

  4. Select

    Hide the Virus and threat protection area.

  5. Select

    Disabled

    >

    Apply

    >

    OK.

Update your antivirus definitions

Complete the following steps to update your antivirus definitions.

  1. Select the

    Start

    menu.

  2. In the search bar, type

    Windows Security. Select the matching result.

  3. Select

    Virus & threat protection.

Under

Virus & threat protection updates, select

Check for updates. If you don’t see this option on your screen, complete the first set of steps in

Turn on Real-time Protection. Then try checking for updates again.

Restart the Computer