Try disconnecting any drives that dont contain an operating system.
Press Ctrl+Alt+Del to restart warning pop-up with the black screen.
Before using this method, you’re gonna wanna prepare a Bootable USB installation ready.
Step 5: ClickTroubleshoot > Advanced options > Startup Repair.
The Windows bootloader on your MBR disk may be damaged.
Step 1: Connect the Windows boot media to the computer and boot from it.
Step 3: At the next screen simultaneously press theShift+F10keys to open theCommand Promptapplication.
Step 5: Repair the disk.
you better go to the corresponding part based on your disks jot down.
If the pop in is MBR:
1.
Typedir a:and pressEnter.
If it is there, that is the System drive.
Skip to step 2.
If the drive is not found or it doesnt contain the \Windows folder, typedir b:and pressEnter.
If the Windows folder is on a different drive, use that drive letter instead of C.
3.
Typeselect disk Cand pressEnter.
Typeselect volume Cand pressEnter.
You should get a confirmation that the volume has been successfully set as active.
If it is there, that is the System Drive.
Skip to step 2.
Typeselect disk Cand pressEnter.
Look for the partition labeled as System.
Once it is found, assign the letter R to the partition.
If the letter R is already taken, you’re free to choose any unassigned letter.
To assign the letter typeassign letter=r:and pressEnter.
To fix MBR Windows 10 without CD, you need the help of an MBR repair tool.
Thus, theMBR repair software MiniTool Partition Wizard is strongly recommended.
Now, you’re free to get MiniTool Partition Wizard immediately.
Step 2: Launch it to enter its main interface.
Step 3: Click theBootable Mediafeature which can help you to boot your system.
Step 4: Choose WinPE-based media with MiniTool plug-in.
Then, choose the media destination.
You just need to wait for the creation process to finish.
Step 5: Connect the bootable media to your machine that meets the an operating system wasnt found issue.
Step 6: Change BIOS order and boot the computer from the MiniTool bootable media.
Step 7: Enter MiniTool Recovery Environment.
choose the system disk and right-click it to chooseRebuild MBR.
Step 8: ClickApplyto confirm the changes.
Try disconnecting any drives that dont contain an operating system issue is reinstalling the Windows.
To do that, you’re able to try thefile backup program MiniTool ShadowMaker.
Step 3: Boot the PC andenter its BIOS menuto set the PC to boot from the USB.
Step 4: When theWindows Setupscreen appears, choose your language and keyboard.
Step 5: On the next page, clickInstall Now.
Step 6: On theActivate Windowspage, clickI dont have a product key.
Step 7: Choose your Windows 11 edition and clickNext.
Step 8: Accept the Microsoft software license, and then clickNext.
Step 9: Choose which key in of installation you want.
you could choose theUpgradeoption or theCustom: Install Windows only (advanced)option.
Step 10: Choose the drive partition where you want to install Windows 11.
To install Windows 11 on a new hard drive, just select it and click Next.
Step 11: Just follow the remaining instructions on the screen.
Back up Your System After Fixing the Issue
What should you do after fixing the annoying issue?
Its highly recommended to back up your system to restore your system when it crashes.
Here is a piece of professionalbackup software MiniTool ShadowMaker for you to do that.
MiniTool ShadowMaker enables you to back up files and keep them safe from an unbootable computer.
It can also help youclone the OS from HDD to SSDwithout data loss.
Now, download MiniTool ShadowMaker Trial from the following button or choose topurchase an advanced edition.
Step 1: After downloading and installing MiniTool ShadowMaker, launch it.
Step 3: Then, click theDESTINATIONpart to choose a location to store the system image file.
Step 4: At last, click theBack Up Nowbutton to start the backup task right now.
Try disconnecting any drives that dont contain an operating system.
Press Ctrl+Alt+Del to restart issue.
