Asus with blue screen error code 0xc0000185

Hi,

I get a blue screen while starting up my brand new Asus laptop.

Error 0xc0000185

No boot device available

Who can help?

hi Horizon. I'm Greg, an installation specialist, 9 year Windows MVP and Independent Advisor, here to help you.

Unplug power and remove battery, press and hold power button for 30 seconds to release all power from circuitry, plug back in and power up to see if any change.

I will give you steps to access the Repair Mode to try all repairs to get Windows started, and if not to do the automated Reset or the superior Clean Install after rescuing your files. These steps don't cover possible hardware failure which might become apparent while performing the steps, so please report back as you go:

1) Use whichever method works in this link to access Advanced Startup Options: https://www.tenforums.com/tutorials/2294-advanc.... Easiest may be to force shut down the PC (by holding in the power button) three separate times to trigger the Startup Options. If one of these methods work, then go to Step 3.

2) If none of the other methods work it may be necessary to Create Windows 10 Installation Media on another PC: http://windows.microsoft.com/en-us/windows-10/m... Make sure to uncheck the box for Recommended Settings to choose only the licensed version.

If the Media Creation Tool will not cooperate use the alternate download site at https://tb.rg-adguard.net/public.php. Burn to DVD using WIndows Image Burner or create bootable flash using one of the options here: https://www.tenforums.com/tutorials/2376-create...

Insert media, boot it by powering up PC while pressing the BIOS Boot Menu Key: https://www.sysnative.com/forums/hardware-tutor...

Choose the boot device as a UEFI device if offered, then on second screen choose Repair Your Computer. If the media won't boot you may need to enter BIOS/UEFI Setup (pressing key given in chart in link above) to turn off Fast Boot or Fast Startup first.

3) In the Advanced Troubleshooting options try to System Restore to a point before the problems began, Startup Repair, then if necessary from Startup Settings try to get into Safe Mode with Networking, or lastly Safe Mode.

If Startup Settings aren't available you can force Safe Mode from Command Prompt following Step 5 here: https://www.digitalcitizen.life/4-ways-boot-saf..., or using the command to unhide F8 Advanced Boot Options here: https://www.tenforums.com/tutorials/22455-enabl... where you can also try the old reliable Last Known Good Configuration.

4) From Safe Mode w/Networking work through the Windows 10 Install Integrity Checklist to make sure the install is set up correctly, optimized for best performance, and any needed repairs get donehttp://answers.microsoft.com/en-us/windows/wiki/windows_10-performance/windows-10-performance-and-install-integrity/75529fd4-fac7-4653-893a-dd8cd4b4db00: If it doesn’t fix Windows enough to start it normally, then try a Windows 10 Refresh: https://www.howtogeek.com/265054/how-to-easily-...

Update your drivers from the PC's Support Downloads web page. Compare the latest drivers with the ones presently installed in Device Manager reached by right clicking the Start Menu. Make sure you have the latest BIOS, Chipset, Display (Video), Sound, USB3, Bluetooth, Network and all other drivers, or else download and install the latest now.

5) If Safe Mode doesn’t work or help stabilize things then return to Advanced Troubleshoot options. Next try Command Prompt to run through Windows 10 Install Integrity Checklist (above link) repair commands including sfc /scannow, DISM, a full Disk Check https://www.groovypost.com/howto/check-hard-dri..., or return to Troubleshoot options to Reset Your Windows 10 PC.

6) Better yet do the vastly superior Clean Install Windows 10 following the steps in this link to delete all partitions down to Unallocated Space to get it cleanest: http://answers.microsoft.com/en-us/windows/wiki...

7) There is a step to Rescue Files from the booted media or Repair Mode Command Prompt first: http://answers.microsoft.com/en-us/windows/wiki...

These steps are excerpted from my tutorial that compiles everything possible for Troubleshooting Windows 10 Failure to Start: http://answers.microsoft.com/en-us/windows/wiki.... You can continue with the other steps there.

I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.

________________________________________________________
Standard Disclaimer There are links to a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
____________________________
Retired 2023, thirteen year daily forums volunteer, Windows MVP 2010-2020

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Hi horizon82

My name is Sarah Kong and I am an independent adviser that is here to try and help you with your issue.

First you will need to force your machine to get into the recovery screen.
To do this boot up and wait for the blue windows screen with the spinning circle, when you see that press and hold power button to shut down.
Boot up again and do the same thing by waiting for the blue windows screen with the spinning circle then shut down, power up for the 3rd time and you should get repair screen.
Let it run.
You will then get a screen with the Automatic Repair, select the Advanced Options.
Once you are in there try using a system restore point.
See if that works first.

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Hi,
I am Sumit, an Independent Advisor and a 2-Year Windows Insider MVP here to help.
Let us try repairing the existing OS.

On a working computer, create an Installation media of Windows 10 that allows you to repair existing Windows Installation.

Create a USB Flash Drive
https://www.tenforums.com/tutorials/2376-create...

Boot from the USB Flash drive-Make sure you have disabled Secure boot/Fast boot in BIOS Settings.

https://www.tenforums.com/tutorials/21756-boot-...
https://www.tenforums.com/tutorials/21284-enabl...

Then open Advanced Startup options after the computer boots from USB. Click Repair your computer at the first screen that says Install now.
https://www.tenforums.com/tutorials/2294-boot-a...

Select Startup repair, let it finish the job and see if the computer can boot afterward.

If that doesn't help, consider doing a clean install after rescuing your files.

Rescue Files when Windows won't start
https://answers.microsoft.com/en-us/windows/for...

How to do a clean install
https://answers.microsoft.com/en-us/insider/for...

https://answers.microsoft.com/en-us/windows/for...

Disclaimer: Tenforums is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products).There is no need to buy paid products to fix your computers as they do more harm than good sometimes.
Sumit

Working on IST
Always include PC Specifications with the problem. Additionally, ensure all the latest quality updates have been installed.

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Last updated April 18, 2025 Views 10,378 Applies to: