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How To Use Command Prompt To Fix Issues With Your PC's Boot Records You can use system recovery tools to fix most of your computer problems. However, there are times when you'll need to address such issues in a manual way like, for example, when your computer won't boot. In these cases, you can use a tool named Bootrec.exe . It can help you troubleshoot and repair things like the master boot record (MBR), the boot sector or the Boot Configuration Data (BCD) store. Here's how it works: Bootrec.exe - The Ultimate Repair Tool For Boot Problems No matter whether you use Windows 7 or Windows 8.1, if your operating system has trouble booting and  Startup Repair  can't fix the problem, it's worth trying the  Bootrec.exe  tool. In order to be able to use this tool, you'll have to use  Command Prompt . However, because you already have startup issues, it's obvious that you won't be able to simply run it from Windows. If you...