If not, you need to use command prompt for Windows 7 boot repair. ![]() If you backup MBR in advance, you can easily restore your computer and make it work as normal. And you will receive an error message like the following before Windows actually begins to load.įATAL: No bootable medium found! System halted. Here is the step by step tutorial for accessing bootrec.If you have Windows 7 boot problems, the boot sector or master boot record on your system partition may be damaged, corrupted, or has missing files. #6 Use bootrec.exe to rebuild the BCDīootrec.exe is a tool built in the Windows Recovery Environment (Windows RE) that you can use to troubleshoot and repair the error. ![]() On updating the BIOS, your PC should start functioning normally. This issue might be displayed due to an outdated motherboard BIOS which is currently present on your PC. If none of the above methods work, try updating your motherboard BIOS. Thus, try restarting your PC when you see BOOTMGR error on it. There is no valid explanation as to why but, restarting a PC is advised before trying any advanced method. It is observed that most of the issues get automatically fixed when a PC is restarted. You can use the ‘ Advanced Startup Options‘ to perform the Startup Repair for Windows on your PC.Īlso Read: How to Add Programs to Startup in Windows? #4 Restart your Windows PC: Using this method, the missing or corrupted files causing the BOOTMGR error will be fixed automatically. #3 Perform a Startup Repair for Windows: How to Add Programs to Startup in Windows? ![]() If all the sectors turn out to be intact, go ahead to the next solution. If there is an issue with the sectors, you can use the chkdsk tool to shield it. The red and green markings will display the affected hard disc areas. Thus, you need to test your hard drive which can be done using MiniTool Partition Wizard. If there is some issue with the sectors on your hard disc, you will be facing this issue.
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