Hey

My xps 9350 suddenly won't boot and shows black screen with blinking underscore instead. 

Running diagnostics identifies no problems. 

I downloaded windows 10 iso and burned it on flash drive and I can't even start windows install... It either goes to blue screen with error 0xc000021a or just keeps on showing underscore. 

I thought it might be SSD but replacing it did not help. 

I also tried loading Linux that is installed on a USB flash drive, and it works fine and the files from the SSD seem to be perfectly fine. So I guess it's not the SSD or the motherboard. Also wifi seems to work fine so I guess it's not the wlan that is problematic. 

 

Other things I tried:

- removing the battery and pressing power button for 30 seconds 

- disabling wlan from bios 

- disabling multicore support from bios 

- burning the windows 10 iso again on my usb flash drive (in case there was a problem with the installation of windows)

 

 

Any more suggestions? What could be the problem and how can I fix it?