Extreme 4 - Turned of Boot Mgr

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   I just have a new PC with Asrock Extreme 4 MB

Everything went well, windows 10 installed, all good.
Then I turned off the boot manager, but after turning boot manager on it still says boot mgr missing.
I have changed the SSD with windows (boot drive) to SATA 0 connection but didnt help.
I also check boot priority, all good. It can also detect all my drives.

I restarted many times with same result.

What should I do?

Edited by Thad_Castle - 07 Sep 2015 at 10:22pm

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Thad_Castle Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07 Sep 2015 Status: Offline Points: 4	Post Options Post Reply Quote Thad_Castle Report Post Thanks(0) Quote Reply Topic: Extreme 4 - Turned of Boot Mgr Posted: 07 Sep 2015 at 10:20pm
	I just have a new PC with Asrock Extreme 4 MB Everything went well, windows 10 installed, all good. Then I turned off the boot manager, but after turning boot manager on it still says boot mgr missing. I have changed the SSD with windows (boot drive) to SATA 0 connection but didnt help. I also check boot priority, all good. It can also detect all my drives. I restarted many times with same result. What should I do? Edited by Thad_Castle - 07 Sep 2015 at 10:22pm

parsec Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 04 May 2015 Location: USA Status: Offline Points: 4996	Post Options Post Reply Quote parsec Report Post Thanks(0) Quote Reply Posted: 08 Sep 2015 at 2:24am
	Did you try clearing the CMOS/BIOS on your board to fix your problem? I'm not sure what you mean by "... turned off the boot manager...", and back on again. Did you do that in the UEFI/BIOS? Please describe that in more detail for me. Are you saying the PC won't boot now because "boot manager" is missing? Did you install Win 10 with more drives than just the SSD OS drive in the PC? ASRock has many different boards that are "Extreme4" models, please provide the full model name for us.


Thad_Castle Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07 Sep 2015 Status: Offline Points: 4	Post Options Post Reply Quote Thad_Castle Report Post Thanks(0) Quote Reply Posted: 08 Sep 2015 at 3:37pm
	How do I clear CMOS/BIOS on my board? In the UEFI, at Tools and storage, you can enable or disable your boot manager and also adjust your boot mngr time out. indd, computer wont boot because boot mgr is missing I only have a windows installed on one drive(SSD) This is my motherboard http://www.asrock.com/mb/Intel/X99%20Extreme4/

parsec Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 04 May 2015 Location: USA Status: Offline Points: 4996	Post Options Post Reply Quote parsec Report Post Thanks(0) Quote Reply Posted: 09 Sep 2015 at 1:48am
	Two ways to clear the CMOS/BIOS: One is by using a jumper on the board. The simpler method is using the CLR CMOS button on the board's IO panel. That button is just under the PS2 inputs at the very top of the IO panel. First, you must shutdown the PC, shutoff the PSU and unplug the AC power cable from the PSU. Wait about 30 seconds for residual power in the PSU to dissipate. Then use a small screwdriver, Q-tip, or the plastic tube from the canned compressed air used to clean PCs, to push that button in and hold it down for several seconds. When you are done connect AC power to the PSU, turn it on and start the PC. Clearing the CMOS/BIOS causes all the options in the UEFI/BIOS to be reset to their default values. When the PC boots after a CMOS/BIOS clear, you will be prompted to enter the UEFI/BIOS to reset any options you use, or to just accept all the default values. If you use many non-default settings in the UEFI, save them in a profile before clearing the CMOS/BIOS. You may then restore them by loading the profile with two mouse clicks, rather than all the work of setting them manually. When I asked about installing Windows 10, I know you have only one drive (SSD) where you installed Windows. What I mean is did you have any other disk drives connected to the board and powered up when you installed Win 10 on the SSD? My guess is that you had at least one other drive running when you installed Win 10. If you have more than just the OS drive running when you install Windows, the Windows installer program will put the MBR or GPT (boot) partition on a drive other than the target OS drive. Why the Windows installer does that is not clear, but I can assure you it does. When you disabled the Boot Manager in the UEFI/BIOS, it seems to have excluded the other drive with the boot partition from being included in the boot process. I can understand why that was done in general by the Boot Manager, but that will cause the issue that you now have. Clearing the CMOS/BIOS should restore things to normal. Just don't touch the Boot Manager option, and in the future always install Windows with only the OS drive powered on in the PC. If you still have a booting issue after clearing the CMOS/BIOS, let us know.