Windows 10: Can't access Advanced Boot Settings

I'm having issues accessing advanced boot settings to recover my PC.System is a Dell XPS 7590Issues originally started when the battery failed and the laptop produced an INACCESSIBLE _BOOT_DEVICE error. After some digging, and attempting to walk the system back one update through Advanced Boot Settings, I found this was caused by the battery failure.Once the battery was replaced, the system prompted me to change the date and time in BIOS setup, but the error persisted, and this time it has not allowed me to reach Advanced Boot Settings to attempt to repair system files.After the INACCESSIBLE _

:)

 

Advanced Troubleshooting not helping with booting up Windows 10.

Hi,

The issue that you're having usually happens when a specific process of the system got interrupted. This interruption can lead to system/hardware corruption. Since you were able to access that Advance troubleshooting (Window Recovery), we would like to know
if you have tried choosing the option Safe mode with Networking. If not, we suggest booting from it using the steps below:

• Go to Advance Troubleshooting.
• Under Advance options, choose Startup Settings.
• Choose Enable Safe mode with Networking or press F5.
  

After successfully booting the computer to it, we suggest running the System File Checker. Kindly follow the steps on this article to perform it:
Using System File Checker in Windows 10. Once done, type chkdsk c: /f
on the Command Prompt then click Enter. Wait for the process to finish, then
Restart your computer.

Update us with the outcome so we can provide further assistance.

 

How does Windows boot to advanced recovery option e.g. command prompt?

- that gives me a 454 'Unexpected error' This tells me that the BCD is partially corrupted.

The commands: shutdown.exe /r /o /f /t 00
or: %SystemRoot%\System32\Cmd.exe /c reagentc /boottore&shutdown /r /f /t 00
should boot into Recovery if everything is configured correctly.
FYI, If Windows is configured correctly:

1. If Reagentc is disabled, you still can get into Recovery but with limited options.
2. If Reagentc is enabled, you'll get all options.
3. If you boot Windows using Recovery USB stick, You'll get into Recovery with couple of options missing.

Here's my suggestion if you want to try:
OPTION 1: Will save the trouble of re-install Windows.

1. Download the image of my first 3 partitions (450MB Recovery, 100 MB EFI partition, and 16MB unformatted primary)
   EFI_Boot-00-00.7z - Google Drive
2. Run Macrium and restore the image from step 1, overwriting your existing 1st three partitions, leaving C alone.
3. Delete the 490MB Recovery partition.
4. From Macrium, run fix boot problems.
5. Reboot. Open Admin command prompt then run Reagentc /info to make sure that it is enabled. If not, enable it.
   if failed to enable, reboot and try again.

OPTION 2: Assuming you've already had Windows backup with Macrium.

1. Wipe out the first 5 parttiions. (450MB, 100MB, 16MB, C Drive, 480MB)
2. Fresh install Windows 10
3. Restore C drive from backup image, run fix boot problems
4. repeat step 5 from OPTION 1 above.

 

Cant boot system, says 'Invalid partition table', also cant access advanced boot options?! HELP!

there are 2 boot order lists in most bioses now.
1st you have

Cdorm
hdd
lan
usb floppy
etc

then if you search you will find a second

which has
Hdd 1
hdd 2
usb

the 1st one tells the bios which type of drive to try and boot from 1st.
the second tell it which hard disk to boot from 1st.
a usb drive these days gets detected as a hard disk so its in the second list.

so you set the 1st list to HDD 1st bot
and the second list you set to usb drive as the 1st hard disk.