Remove viruses and malware from a Windows 7 computer

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Issue/Question

  • How do I run a virus scan on my Windows 7 computer?

Environment

  • Personally-owned Computers
  • Windows 7

Resolution

  • From a virus-free Windows computer, follow this link to download the latest free version of Malwarebytes
    • Download Malwarebytes to a portable flash drive
  • From a virus-free Windows computer, follow this link to download the latest free version of McAfee VirusScan Enterprise
    • Download McAfee VirusScan to a portable flash drive
       
  • Disconnect your infected computer from the network
    • If you are connected to a wired network, unplug the cable from your computer
      • Do not reconnect it until you have finished this process
    • If you are connected to a wireless network, follow these steps:
      1. Open your Start menu and select Control Panel
      2. Select Network and Internet, and then select Network and Sharing Center
      3. In the left column, click Change adapter settings
      4. Right-click Wireless Network Connection and select Disable
         
  • Disable System Restore
    1. Open your Start menu and select Control Panel
    2. Select System and Security
    3. In the left column of the System and Security window, click System protection
    4. Under Protection Settings, select any drive where Protection is set to On, and then click Configure
    5. Under Restore Settings, select Turn off system protection
    6. Click OK, and then click Yes to confirm that you want to turn off system protection
       
  • Restart your computer and install Malwarebytes
    1. While the computer is starting, press the F8 key repeatedly until you see the Advanced Boot Options menu
    2. On the Advanced Boot Options menu, select Safe Mode, and then press the Enter key
    3. Open the Malwarebytes .exe installer and follow the prompts to install the software on the infected computer
      • Update malware definitions before you scan your computer 
         
  • Run a scan using Malwarebytes
    1. Open Malwarebytes' Anti-Malware and click the Scanner tab
    2. Select Perform quick scan, and then click Scan
    3. When the scan is complete, click the Quarantine tab to review detected threats
    4. Select the name of a malware program and click Delete to remove it from your computer
       
  • Restart your computer and install McAfee VirusScan
    1. If prompted to select a boot option, select the Start Windows Normally, and then press the Enter key
    2. Open the McAfee VirusScan .exe installer and follow the prompts to install the software on the infected computer
       
  • Restart your computer in Safe Mode
    1. While the computer is starting, press the F8 key repeatedly until you see the Advanced Boot Options menu
    2. On the Advanced Boot Options menu, select Safe Mode, and then press the Enter key
       
  • Run a scan using McAfee VirusScan
    1. Open Programs, and select McAfee
    2. Select On-Demand Scan to open the VirusScan On-Demand Properties - Full Scan window
    3. Select All local drives and click Start
    4. Save the scan logs as proof of removal
      • You must present scan logs as proof of removal so that your access to the network can be restored
         
  • Enable System Restore
    1. Open your Start menu and select Control Panel
    2. Select System and Security
    3. In the left column of the System and Security window, click System protection
    4. Under Protection Settings, select the backup drive you want to enable, and then click Configure
    5. Under Restore Settings in the System Protection for (Disk Name), select Restore system setting and previous versions of files
    6. Click OK, and then click OK
       
  • Restore your computer connection to the network
    • If you connect to a wired network, plug the cable into your computer
    • If you connect to a wireless network, follow these steps:
      1. Open your Start menu and select Control Panel
      2. Select Network and Internet, and then select Network and Sharing Center
      3. In the left column, click Change adapter settings
      4. Right-click Wireless Network Connection and select Connect
         
  • Change Windows Update setting
    1. Open your Start menu and select Control Panel
    2. Select System and Security, and then select Windows Update
    3. In the Windows Update window, click Change settings
    4. In the Choose how Windows can install updates window, select Install updates automatically 
    5. Under Install new updates, select a schedule for installation
    6. Click OK

 

Notes

 

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Details

Article ID: 18093
Created
Mon 11/7/16 8:13 AM
Modified
Fri 9/14/18 10:12 AM