Formatting pre built pc

Question

Ok so i really hope somebody can help me with this. I bought a pre built pc a few days ago. This is a "demo" pc which pretty much meant the pc was returned/repaired and not picked up again so they sold it very cheap. Now the first thing i did when i got it was check for issues, used windows diagnostics to check my ram and used a few other tests on other hardware and it all seems like it works perfectly. So im pretty sure this is mostly software related but here are specs anyway:  Windows 10 Gtx 1080ti I7 8700k Asus rog b350 250gb ssd So i noticed games crashing or not even starting, chrome randomly crashing, even the event wiever cant start sometimes. These are just a few of the issues but anyway i decided to format the pc. I tried formatting through windows settings which only resulted in crashes/blue schreens. My windows was up to date but i still tried downloading the may 2019 update which also resulted in blue schreens. I then got my bootable usb with windows 10 only to recieve another blue schreen. The usb drive works  as i just formated the drive from the new pc in an old computer, however now the computer will only boot to blue schreens :/ how do i escape this blue hell? Any help is greatly appritiated Error messages: When booting from usb (or when automatic repair launches): 0xc0000021A. When just trying to boot: Inaccessible_boot_device

Answer 1

Hi,

Thank you for writing to Microsoft Community Forums.

I understand that you are facing issues while performing re-installation of Windows on your PC.

Since you are receiving the error inaccessible_boot_devicewhile performing the re-installation I would suggest you to check if the bootable media is set as the first priority to boot the PC. Follow the steps to change the boot device.

1. Power the device off and then back on.
2. Look for a message on the boot screen just before or after the manufacturer logo appears. You may need to press the F1, F2, or Delete button, whatever key is indicated on the boot screen to enter BIOS Settings.
3. Inside BIOS, look for a tab called BOOT and select that page. Depending on the BIOS manufacturer, this page could be BOOT, ADVANCED, STARTUP, etc
4. Once you are on the BOOT tab find the boot priority and change the boot device to USB first and second hard drive.

If you are still facing issues, you can try creating a new bootable media and check if you are able to perform the installation. Refer the article How to create Windows 10 installation DVD/USB flash drive Step-by-Step Guide.

You can also try updating BIOS, as there is an update available for the motherboard model you are using. You can download the update from the manufacturer website.

Note: Modifying BIOS/ complementary metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of BIOS/CMOS settings can be solved. Modifications of the settings are at your own risk.

Regards,

Prakhar Khare

Microsoft Community – Moderator