How to run a system scan on windows 7

I rebooted in safe mode, no networking, and opened N It said it was limited with no internet connection but offered a full system scan. I started it and the upper right corner says initializing After I while I tried to close it and it says it has not completed. Is it possible to run a scan in Windows safe mode? Should I use safe mode with networking? Should I run a scan at all? Can I download something to a USB on another computer and run it? Any idea what hit me?

Firstly, please do NOT try any 'quick fixes' or to solve this yourself. It sounds like it's time to sign up for assistance from one of the free malware removal sites.

You should do that in the justified suspicion of existing hardware error in any case. But please note that the operation can then take a long time. For a first routine check, we recommend that you do not select this option. Click Start. If the drive that you want to check is currently in use and it is your system drive, you will see a dialog box with a warning message.

In this case, click Schedule disk check. Exit all open programs, and then restart your computer. The checking will start automatically before next Windows startup and display the results when completed. If you are not checking the system drive, you do not have to turn off the computer.

However, the selected drive may also be in use. In this case, you receive a message. After you have saved all files and close all open programs, click Force a dismount. The checking starts immediately. After it is completed, the results will be displayed. Need more help? Expand your skills. Get new features first. After you determine which system file was corrupted and could not be repaired through the detail information in the Sfcdetails. To do this, follow these steps: Note You may be able to get a known good copy of the system file from another computer that is running the same version of Windows with your computer.

You may perform a System File Checker process on that computer to make sure the system file that you intend to copy is a good copy. Take administrative ownership of the corrupted system file.

To do this, at an elevated command prompt, copy and then paste or type the following command, and then press ENTER:. Grant administrators full access to the corrupted system file. Replace the corrupted system file with a known good copy of the file. If the steps above don't work, you may need to reinstall Windows.

For more info, see Windows 10 recovery options. Windows 8. Need more help? Expand your skills. Get new features first. Was this information helpful? Yes No. Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve?