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· Registered
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Discussion Starter · #1 ·
Hey guys,

I have been troubleshooting my PC for the last 3 hours and i'm totally out of ideas.
Infinite hugs to whoever solves my issue!

My pc has been having issues for 1 week or so.

- +- 7 days ago BSOD: critical process died (in RDR2 at full load after 20 mins gameplay.

- 3 days ago the same BSOD, when my pc restarted i could not boot any of the drives for the first time. I fixed the issue by changing the boot mode from UEFI to CSM. After doing this the pc booted as normal.
It booted and worked with no issues until this morning.


1. When I tried to boot the PC i just got a black screen. I fixed this issue by unplugging my 1st monitor and plugging in my 2nd monitor into the alternate HDMI slot.

2. Next, when starting the PC i got the 'bootmgr not detected press CTRL+ALT+DEL to reboot' error code. I tried to use boot select (F11) to boot from my 3 drives (which were visible at this time). All 3 drives get the error message, including my windows SSD.

3. I tried to change from UEFI to CSM again but the option was greyed out.

4. afterward I tried to reset the CMOS and BIOS using the buttons on the back of my case.

5. After this the boot select screen stopped showing any of my drives. The only option was enter setup which led me to the BIOS.

6. Then, after a reset the screen went full black. After some troubleshooting my friend suggested me to install the newest bios update.


I installed the update, the BIOS is fully accessible again and the HDD and SSD's are visible in the hardware monitor.

When i try to use boot select none of my drives are visible.

i can't seem to change the UEFI to CSM setting.

I have also tried to reinstall windows from a USB disk but this gives the following screens:
I have no idea what more I can do. It seems to me like a software issue, as all components are visible in the BIOS but I could be totally wrong.

I am clearly out of my league here and will be forever grateful to the person that can help me :),



Motherboard: MSI MEG X570 Unify

CPU: AMD Ryzen 7 5800X, 3,8 GHz

GPU:GIGABYTE GeForce RTX 3080 Gaming OC 10G

RAM: 2 x Corsair 16 GB DDR4-3000 Kit

PSU: COOLER MASTER Silent Pro M600 RS-600-AMBA-D3 600 W

SSD 1:Samsung 850 EVO, 500 GB SSD
SSD 2: Kingston V300 (120 GB) <- windows drive
HDD: An old Seagate Barracuda, for movies etc.

CPU Cooler: be quiet! Dark Rock Pro 4

· TSF Moderator , Hardware Team , Networking Team
12,043 Posts
1) Get on a Windows computer that works and download the same version of Windows that is installed on that machine (with a legit license).

2) Use Microsoft's tool to burn that download to a USB flash drive (which will make it bootable).

3) Plug that USB into the computer, turn the computer On, then tell the computer to boot from this USB flash drive and you should see the Windows Installation routine start up.

4) Tell Windows which drive you want Windows installed to and let it do it's thing. When it's done and wants to reboot, remove the flash drive, cross your fingers and let it reboot. With any luck Windows will boot from your hard drive/SSD now.

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