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The Inspiron 15-3521 has an optional touch screen feature and has a 15.6" display. This laptop is also complete with a matte finish and keyboard complete with number pad.

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Error 0xc0000185 BSOD after Windows 8.1 to 10 update

Hey iFixit community,

After updating my Dell Inspiron 3521 from Windows 8.1 to 10, a nice BSOD showed up with the error code 0xc0000185. It said "You'll need to use the recovery tools on your installation media. If you don't have any installation media (like a disc or USB device), contact your system administrator or PC manufacturer." I have tried multiple solutions from other websites to no avail. The furthest I have gotten was changing my BIOS settings from UEFI to Legacy boot, allowing it to boot from USB drives. However, with no other drives plugged in, it detects no bootable media. Has the hard drive failed? Will I need to purchase a new copy of Windows (I do not have the original product key)?

Service Tag: DHKC0X1

Thanks for any help,

Tanner Lange

P.S. If you need any more information/pictures, I will update this post as soon as possible.

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You can create a new bootable Windows 8.1 USB drive.

You can renable Secureboot and UEFI, as the Windows 8.1 and Windows 10 bootable USB do support UEFI.


Try to reinstall windows 8.1 first.

Then go to support.dell.com, put in your service tag, and make sure you have the latest Windows drivers and BIOS.

Then go ahead and download Windows 10 and make a bootable USB.


Run the SETUP from within Windows 8.1

Becareful at what you choose, it may wipe your hard drive. Before doing any new installs, you may want to back up your files. You will have to remove the hard drive and connect it to another computer via USB enclosure.

Here is a video on disassembly to remove the hard drive.


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