Fix Bootmgr is missing | Windows help
This message means the boot manager was not found. It can happen after disk changes or bad updates. This guide walks you through common fixes step by step. If it does not work or you prefer professional help, Leftclick AG in the Basel region is here for you.
Step by step
- 1
Check boot order
In BIOS the Windows disk must be first boot device.
- 2
Windows install media
Boot from USB, choose Repair your computer, Troubleshoot, Command Prompt.
- 3
Repair boot entry
Commands like bcdboot C:\Windows are possible but require exact partition knowledge.
- 4
Back up data
When unsure, back up data first. Leftclick can aim for boot repair without data loss.
When DIY is not enough
If these steps do not help, you are unsure, or several devices in your business are affected, Leftclick AG can take over troubleshooting. We work via remote support or on-site in the Basel region and find the root cause without guesswork.
FAQ
- Is the initial consultation free?
- We briefly clarify the issue by phone and honestly tell you whether a DIY fix is enough or professional help makes sense.
- Do you support business PCs too?
- Yes. We support SMEs in Basel-Stadt and Basel-Land with managed IT, support and security from a single team.