An NDIS error typically causes a blue screen crash of the Windows operating system where a file named "ndis.sys" causes the problem. The location of this file is in the Windows driver directory and it is part of the network protocol drivers for your network card. If this file is missing or a virus corrupts it, your computer will not connect to your network and may crash. To resolve the issue, you can copy the "ndis.sys" file from a backup located in the "ServicePackFiles" directory on your computer.
- Skill level:
- Moderately Easy
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Click the "Start" button. Click the arrow next to "Shut Down" and click on "Restart."
Tap the "F8" key repeatedly as the computer boots up, but before Windows loads, to display the "Advanced Boot Options" menu.
Navigate with your keyboard arrows to highlight the "Safe Mode with Command Prompt" option and press "Enter."
Type the following text into the command prompt exactly as displayed and press "Enter." The double-quotation marks are part of the command. "C" is the letter assigned to your hard drive.
copy "C:\WINDOWS\ServicePackFiles\i386\ndis.sys" "C:\WINDOWS\system32\drivers\ndis.sys"
Press "Alt," Ctrl" and "Delete" simultaneously on your keyboard. Click the arrow on the lower right-hand corner of the screen that opens and select "Restart." Allow your computer to boot into Windows as normal.
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