Look for a tab in the BIOS Setup Utility that is labeled Boot Order, Boot Options, or Boot. Most PCs use the F2, F10, ESC, or DEL key to begin the BIOS Setup. If your PC will not detect the media automatically:ĭuring the restart process, read the screen for any instructions that explain how to interrupt normal startup and enter the BIOS Setup Utility. The scan will take a few minutes and remove any malware that may be infecting your computer. The PC will start from the Windows Defender Offline CD, DVD, or USB flash drive. Use the arrow key to scroll to the drive that has the bootable CD, DVD, or USB flash drive in it, and then press Enter. There will be an entry for each hard drive, one for each CD, DVD drive, and a USB flash drive. In some cases, you might need to press any key to start from the CD, DVD, or USB drive or to press a specific key, such as F12. Read the instructions on the screen to turn on this option. If your PC doesn't detect media automatically, skip to step 7: If your PC will detect the media automatically follow the steps below. Insert the Windows Defender Offline CD, DVD or USB in the PC infected with a virus or malware. On the left hand pane of the Save As window, click the removable media and click Save. Insert a CD, DVD, or removable USB drive. When the download is finished, remove the removable media. When prompted, click the arrow next to Save, then click Save as. The version will be listed next to System Type. If you're unsure of which version of Windows you are running, click the Start button, right click Computer, then left click Properties. On another computer, go to the Windows Defender Offline Beta site at: What is Windows Defender Offline Beta?ĭepending on your version of Windows, click Download the 32-bit version or Download the 64-bit version. The Windows Defender Offline Beta tool will help remove boot sector viruses.

This may result in the error you're receiving. If you still can't boot into Windows successfully, proceed to method 2.īoot sector viruses infect your computer before Windows starts. On the Advanced Boot Options screen, use the arrow keys to highlight Last Known Good Configuration (advanced), and then press Enter.

If the Windows logo appears, you'll need to try again by shutting down and restarting your computer. To do this, follow these steps:Ĭlick the Start button, then click the arrow next to Shut Down, then click Restart.Īs your computer starts, press and hold the F8 button. When starting the PC using the Last Known Good Configuration, your computer starts with the configuration from the last time your PC booted successfully. Method 1: Use the Last Known Good Configuration to start Windows If the first method doesn't resolve this issue, proceed to the next method. To fix this error, follow the methods below.

Windows 7 stop 0x0000007b virtualbox