Disk Cleanup
Note: Be sure to have all your important files backed up before starting this process. This process could take some time, depending on the number of files.
Go to the Start button and search for Disk Cleanup.

Select Clean up System Files.

When this dialog box appears.
Check all Boxes.
Click "OK."

Wait for the cleanup to finish, and it will close automatically.
Clear Browser Data
Google Chrome
Launch Google Chrome.

Press Ctrl + Shift + Delete to open the clear browsing history window.
- Make sure the Time Range is set to All Time.
- Leave all the boxes checked.
- Then click Clear Data.

Once the dialog box disappears, you are free to browse the web.
If the above steps do not work, do the following steps.
- Go to the three-dot symbol in the top right corner.
- Click the "Settings" link.

Select Show Advanced Setting.
Click the Restore settings to their original defaults button at the bottom of the page.

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Mozilla Firefox
Launch Firefox

Press Ctrl + Shift + Delete to open the clear browsing history window.
- Next to Time Range to Clear, select Everything.
- Click the OK button at the bottom of the dialogue box.

Once the dialog box disappears, you are free to browse the web.
If the above does not work: Reset Firefox by following the instructions on this page: Reset Firefox Settings.
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Safari
Launch Safari

- On the Top Menu bar, go to History.
- Select Clear History at the bottom.

Select All History from the drop-down menu.

Next, press the Clear History button.

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Install Antivirus
Note: Be sure to have all your important files backed up before starting this process. This process could take some time, depending on the number of files.
Windows
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Uninstall old/expired antivirus programs.
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The following are suggested Antivirus/Malware Remover:
Mac
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Uninstall old/expired antivirus programs
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Download a Malware Remover; we suggest Malwarebytes
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Malwarebytes installation file will download automatically
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Open and follow the onscreen installation instructions.
Windows Security
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Please ensure that all other antivirus programs are turned off and uninstalled before activating.
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Search for Windows Security.
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Click settings and ensure Real-Time Protection is selected.
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Then click save changes.
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Check for updates and then run Full Scan on your computer.
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It may take some time to do a full system scan.
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Update Software
Windows
Go to the Start button and navigate to Settings.

Go to Update & Security.
Then click on Windows Update.

Click the Check for Updates button and wait for it to finish finding the latest updates.
If there are updates, click the Install Now button, or If there are no updates, close the window.

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Mac OSX
- Click on the Apple Icon.
- Click on the System Preferences link.

Next, click on the Update Now button.

The next step will be to restart your computer. Click on the Restart button.

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Remove Unused Apps
Windows
Note: Only one application can be uninstalled at a time. You will need to repeat this process for each app you wish to uninstall.
Go to the Start button and search for Apps & Features.

- On the list of applications, select one that you would like to uninstall.
- Click the Uninstall button.

On the small window that will appear, click Uninstall again

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Mac OSX
Go to Finder.

Select unused Applications and malware/old applications. ⇒ Examples: MacKeeper, MacCleaner, and MacDefender.
Select all the applications and press Command + Delete.
Enter the admin username and password to move files to the trash.
Go to Downloads in the sidebar.

Delete any disk image or package files.
Delete any other malware or suspicious files.
Click the Trash can icon.

In the top bar:
- Hit the Gear icon.
- Select the Empty Trash button.

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