I wonder if anyone here can shed some light as to why I can't boot in Normal start up only Selective works!
Running the following spec.
Windows 10 Pro 64bit version 19042.928 UEFI
Ryzen 5 3600
MSI B450 Gaming Pro Carbon AC
32GB ram
WD SSD Black edition
Nvidia GeForce RTX 2070 super
I have tried updating OS to latest version but still the same issues exist.
UEFI is selected in bios and have tried disabling enabling Secure boot but that makes no difference
I have Installed fresh copy on my new SSD above and still same outcome. It's always set to Selective start up and boot time always ligers so after creating boot log find that "dxkrnl.sys" loads ok but then on next line reports,
" BOOTLOG_NOT_LOADED \SystemRoot\System32\drivers\dxgkrnl.sys" this is always the same outcome!
So if I choose Normal start up when I boot it can not find and boot info or loader it's like it's not there and the only way I can get my system back is by a recovery image as all other options fail to sort it.
from what I've read it is failing to find the BCD which is housed on another hidden partition created by Windows and obviously has no drive letter!. what I can make out is the system seems to not have the correct boot directory in memory for the boot loader I have tried diskpart and gone through the motions of assigning drive letter to hidden drive and backing up and creating a new BCD but always seem to hit an issue some where down the line.
I'm able to find the the directories and after assigning drive letter to the Hidden drive windows uses for the BCD I then try this command but just end up with list of command line tools details!
K:\EFI\Microsoft\boot\Boot\bcdboot C:\Windows /s V: /f UEFI
it reports
Failure when initialising library system volume.
bcdboot - Bcd boot file creation and repair tool.
then lists all it's commands!
It would be fantastic if there was a Windows tool that could fix and create a new BCD but have looked high and low with no joy only Diskpart seems to be available for this purpose.
I just built this system a little while ago and want it to work with UEFI instead of MBR as there's no point in building a new system only to install an old file system to run it that will only end up going the way of the DODO sooner or later as mbr has serious limitations concerning HD sizes ect'.
As far as I can make out this dxgkrnl.sys is the windows built in DirectX kernel so I suppose I'm not currently running DirectX which is a serious problem for me as this system was built purely for gaming. I have reinstall windows countless times and reinstall over the top as directed but always end up at the same place. been searching nearly a year to solve this but can only find issues that are not connected to mine in anyway. I also DO NOT get BSOD as a result of my issue I have never experience that at any time which is quite surprising considering this is Microsoft where talking about and bsod was the only thing that Gates got working without fail in his OS's lol.
I don't know if I am missing something in the bios but surely this should work out of the box! apart from selecting UEFI of course.
I believe the reason that the dxgkrnl.sys driver that isn't loading is connected to only being able to boot in Selective start up which in turn is causing a sluggish boot time so it looks like it's all connected. I just need to find out why I can't boot in Normal start up and load all drivers!.
I would really appreciate any help here as this is driving me absolutely crazy with frustration to the point I'm now looking at alternative OS's.
thanks for checking this thread out.
Update:
found that my secure boot was set to custom? not sure why that was! So I set it to standard and now when I select Normal it boots but reverts back to Selective once windows is loaded! so that seemed to fix having to use the image to install windows again due to no boot info found but still have dxgkrnl.sys issue I wouldn't care about Normal start up if it wasn't effecting dxgkrnl = slow boot.
also ran diag and it says all ok! I have diag log but too long to post here. it seems to be working! I think but still need to sort it not loading as its causing slow boot up.
Running the following spec.
Windows 10 Pro 64bit version 19042.928 UEFI
Ryzen 5 3600
MSI B450 Gaming Pro Carbon AC
32GB ram
WD SSD Black edition
Nvidia GeForce RTX 2070 super
I have tried updating OS to latest version but still the same issues exist.
UEFI is selected in bios and have tried disabling enabling Secure boot but that makes no difference
I have Installed fresh copy on my new SSD above and still same outcome. It's always set to Selective start up and boot time always ligers so after creating boot log find that "dxkrnl.sys" loads ok but then on next line reports,
" BOOTLOG_NOT_LOADED \SystemRoot\System32\drivers\dxgkrnl.sys" this is always the same outcome!
So if I choose Normal start up when I boot it can not find and boot info or loader it's like it's not there and the only way I can get my system back is by a recovery image as all other options fail to sort it.
from what I've read it is failing to find the BCD which is housed on another hidden partition created by Windows and obviously has no drive letter!. what I can make out is the system seems to not have the correct boot directory in memory for the boot loader I have tried diskpart and gone through the motions of assigning drive letter to hidden drive and backing up and creating a new BCD but always seem to hit an issue some where down the line.
I'm able to find the the directories and after assigning drive letter to the Hidden drive windows uses for the BCD I then try this command but just end up with list of command line tools details!
K:\EFI\Microsoft\boot\Boot\bcdboot C:\Windows /s V: /f UEFI
it reports
Failure when initialising library system volume.
bcdboot - Bcd boot file creation and repair tool.
then lists all it's commands!
It would be fantastic if there was a Windows tool that could fix and create a new BCD but have looked high and low with no joy only Diskpart seems to be available for this purpose.
I just built this system a little while ago and want it to work with UEFI instead of MBR as there's no point in building a new system only to install an old file system to run it that will only end up going the way of the DODO sooner or later as mbr has serious limitations concerning HD sizes ect'.
As far as I can make out this dxgkrnl.sys is the windows built in DirectX kernel so I suppose I'm not currently running DirectX which is a serious problem for me as this system was built purely for gaming. I have reinstall windows countless times and reinstall over the top as directed but always end up at the same place. been searching nearly a year to solve this but can only find issues that are not connected to mine in anyway. I also DO NOT get BSOD as a result of my issue I have never experience that at any time which is quite surprising considering this is Microsoft where talking about and bsod was the only thing that Gates got working without fail in his OS's lol.
I don't know if I am missing something in the bios but surely this should work out of the box! apart from selecting UEFI of course.
I believe the reason that the dxgkrnl.sys driver that isn't loading is connected to only being able to boot in Selective start up which in turn is causing a sluggish boot time so it looks like it's all connected. I just need to find out why I can't boot in Normal start up and load all drivers!.
I would really appreciate any help here as this is driving me absolutely crazy with frustration to the point I'm now looking at alternative OS's.
thanks for checking this thread out.
Update:
found that my secure boot was set to custom? not sure why that was! So I set it to standard and now when I select Normal it boots but reverts back to Selective once windows is loaded! so that seemed to fix having to use the image to install windows again due to no boot info found but still have dxgkrnl.sys issue I wouldn't care about Normal start up if it wasn't effecting dxgkrnl = slow boot.
also ran diag and it says all ok! I have diag log but too long to post here. it seems to be working! I think but still need to sort it not loading as its causing slow boot up.
Last edited: