There are several reasons for these system files to get corrupted, and most of the time, it’s almost impossible to repair the corrupted files manually. No matter what, after receiving this screen you’ll be forced to reboot your PC. This can make troubleshooting the error a bit complicated.
- The OS performs some more calculations, at this stage, and offers a similar-looking prompt window, but this time presents the option to delete previous Windows installation.
- Whatever the cause is, you can troubleshoot error code Code 21 the issue and solve the problem with the following tried-and-true fixes.
- So even if you disable your antivirus programs, Windows Defender is always there and protects your computer .
- The “Entry Point Not Found” error is a common error message that shows up when you try to run a software application or program on a Windows operating system.
Run CHKDSK from File Explorer
However, removing external devices doesn’t fix the problem; it makes it easier for Windows to figure out what’s wrong. Connect the USB drive to your computer and boot from it.
On the left-hand menu, select “Choose what the power buttons do.” Archived from the original on December 25, 2020 – via Microsoft Docs.
Method 3: Run First Aid in Recovery Mode
Before proceeding to replace your hard drive, learn how to test and diagnose your disk for hardware errors. To restore your device to the latest version of software, use recovery mode on your iPhoneor recovery mode on your iPad. If you still see the error, check for other USB issues, check your third-party security software, thencheck your hardware. I followed the steps you have listed but after the chkdsk /f /r, I don’t get the full message giving me an option to run on restart. Now click the ‘Next’ button and select a restore point from the list that predates the occurrence of the error message. You can run the following command from Windows terminal with administrative access to reset the TCP/IP. To complete the process you need to restart the Windows device.
Step 1. Boot the Computer Through the Installation Media
If you often find blue screen errors on your PC or corrupt files that have affected your PC’s processing unit, you may look at a severe case of fatal system errors. Option 3 – To repair errors, locate bad sectors, and recover readable information, select the Scan for and attempt recovery of bad sectors checkbox, then click Start. System File Checker, in most cases, should work now. If not, type in the following three lines and press enter after each.
Again sometimes bad sector on a disk drive also cause this problem. If you are also struggling with this problem here are some effective solutions to apply.