Question:

Hello, I have an Acer laptop , suddenly the PC screen is completely black and noting was displayed, but the keyboard is on, so I can make sure that the windows is still working, I tried to restart the computer, then the system reported that there was a dll file missing, but the information disappeared soon, so I can’t remember the missing file name exactly, The file maybe is Hall.dll?  What should I do ? A lot of people online recommend some tips like reinstall windows to recovery the system, this could solve this problem, but all methods seem to require a CD-ROM, but I don’t have any CD or optical disc drive, is there any other solution to solve this problem?

Answer:

Please try booting the computer in Clean Boot, press F8 into windows safe mode,  see if you encounter the same error, the hall.dll is still missing. Please follow these steps to fix the dll file missing errors:

1, Power on your PC, press F8, select safe mode with command prompt”.

2. Type “reagentc /info” in the open command line environment, and then press the “Enter” key.

3. After determining that Windows RE is disabled, type the “reagentc/enable” command line and press the “Enter” key to re-enable Windows RE.

4. Restart Windows  Press F8 at startup and you’ll see the option to “fix your computer” in advanced startup options.