Acer Windows 10（10.0.16299.15）无法启动故障技术求助

Hey there, let's work through this boot issue together—it's super frustrating when your PC won't start after a shutdown, but we've got several troubleshooting steps to try:

First, Fix the C: Drive Access Issue #

Right now your CMD is stuck in the X:\Windows\system32 environment, and just typing cd C: isn't enough because the system drive might not be properly mounted. Here's how to fix that:

• Launch diskpart in the command prompt
• Run list volume to see all your drives. Look for the volume labeled Windows (it might not have the C: letter assigned right now)
• Type select volume [VOLUME_NUMBER] (replace [VOLUME_NUMBER] with the number of your system volume from the list)
• Run assign letter=C: to assign the C: drive letter. If C: is already taken, use another letter like D: and adjust the following commands accordingly
• Type exit to leave diskpart

Repair the Boot Configuration #

Now that you can access your system drive, let's fix the boot records. The "Access is denied" error with bootrec usually happens because of permissions or a corrupted BCD file:

1. First, back up your current BCD file:

   bcdedit /export C:\BCD_Backup
   

2. Navigate to the boot directory and modify the BCD file's attributes:

   C:
   cd boot
   attrib bcd -s -h -r
   

3. Rename the corrupted BCD file:

   ren c:\boot\bcd bcd.old
   

4. Rebuild the BCD:

   bootrec /RebuildBcd
   

   When prompted, press Y to add the Windows installation to the boot list.
5. If that doesn't work, try these additional bootrec commands:

   bootrec /FixBoot
   bootrec /FixMBR
   

   (Note: bootrec /fixrec isn't a valid command—you probably meant bootrec /FixBoot!)

Run Offline System File Checks #

Corrupted system files could also be causing the issue. Run these offline scans:

• First, run the System File Checker:

  sfc /scannow /offbootdir=C:\ /offwindir=C:\Windows
  

• If SFC can't fix all issues, use DISM to repair the system image:

  DISM /Image:C:\ /Cleanup-Image /RestoreHealth
  

  (This requires an internet connection to download replacement files, or you can use a Windows 10 installation media as a source with the /Source: flag.)

Check for Disk Errors #

A failing or corrupted hard drive might be the root cause. Run this command to scan and fix disk issues:

chkdsk C: /f /r

You'll get a prompt saying the disk is in use—type Y and restart your PC; the scan will run automatically on boot.

内容的提问来源于stack exchange，提问作者Kasper Knudsen