Hi I'm trying to run the "SFC /scannow" command from command prompt on the Vista DVD since my computer won't boot up (ntkrnlpa.exe missing or corrupt, I've tried every method to fix it but my computer won't boot up AT ALL) so I booted up from the vista DVD & sfc /scannow won't work i keep getting this message? "Windows File Protection could not initiate a scan of protected system files."
. Insert the Windows Vista installation disc into the disc drive, and then start the computer. 2. Press a key when the message indicating "Press any key to boot from CD or DVD …". appears. 3. Select a language, a time and currency, and a keyboard or input method, and then click Next. 4. Click Repair your computer. 5. In the System Recovery Options dialog box, choose the drive of your Windows installation and click Next 6. At the System Recovery Options Dialog Box, click onSystem Restore. 7. Follow the System Restore Wizard instruction as usual and choose the appropriate restore point. 8. Click Finish to restore the system.
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1. Insert the Windows Vista installation disc into the disc drive, and then start the computer. 2. Press a key when the message indicating "Press any key to boot from CD or DVD …". appears. 3. Select a language, a time and currency, and a keyboard or input method, and then click Next. 4. Click Repair your computer. 5. In the System Recovery Options dialog box, choose the drive of your Windows installation and clickNext. 6. At the System Recovery Options Dialog Box, click on Repair your computer. 7. (Click the operating system that you want to repair), and then click Next. 8. In the System Recovery Options dialog box, click Startup Repair
If you have correctly done all this you have to try to fix boot.