It's easier. 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. And you will receive an error message like the following before Windows actually begins to load.
Error loading operating system. The boot sector is a small section at the beginning of a hard drive. It's created when you format the hard drive. It also hosts the Master Boot Record MBR , which contains the disk signature, partition table for the disk, and a small bit of code called the master boot code.
Then it will scan the partition table, determine the active partition, load a copy of the boot sector into the PC's RAM, and hand off the startup process. If you backup MBR in advance, you can use it to restore your computer and make it work as normal. If not, you can see the next part and learn to repair boot with command prompt in Windows 7.
If your boot sector or MBR runs into problems, you cannot start Windows normally. That's to say, you need the Windows installation disc to boot your computer. If you don't have, you can create system repair disc or recovery disk on a working computer. Then, let's start with detailed steps below. Step 1. Create Windows 7 installation media on a working computer. Step 3. Start your computer and press the corresponding key to go to BIOS. Step 4. Set boot priority to your drive in the Boot option.
Step 5. If you use software for overclocking, uninstalling the program can solve the problem. If you use BIOS settings for overclocking, please refer to the following brief tutorial to disable it:. Is Overclocking Safe? Whether to Overclock or Not? Look Here. Here are 3 ways to access Startup Repair:.
If the Startup Repair can't solve the "computer won't boot Windows 7" problem, you can try other Windows 7 repair tools. If the RAM bar has something wrong, the Windows 7 also won't boot. Please check memory for errors.
Please pay attention to its Status to see whether there are errors detected. If it detects errors, you should search online for solutions, or you should replace the RAM with a new one. If some system files are corrupt, causing Windows 7 not to boot, you can use SFC command to repair these system files. Here is the guide:. Sometimes, outdated drivers may not make CPU and devices like hard drive, RAM, and other parts communicate smoothly, cause "Windows 7 won't boot" problem.
In this case, you can update these drivers to solve this problem. MBR Master Boot Record is the first sector on the hard drive accessed by a computer in booting process and it records the relevant information about the hard disk itself and the size and location information of each partition on the hard disk. If MBR is corrupt, Windows 7 won't boot, too. In this case, you can rebuild MBR through commands. Then, you should run the following commands one by one.
If all above methods don't work for you, you can use this method. The problem is that you may haven't created a system restore point or a system image. To create system restore points or system images needs you to open system protection. If the system protection is enabled, it is usually configured that the restore points are created automatically when you install a new app, driver, or update. But you can manually attempt to rebuild the BCD boot figuration data , partition boot sectors, and master boot record by running bootrec.
Open a Command Prompt window, input the following commands, and press Enter after each. Since System Protection is enabled by default, you can use it to restore your computer to an earlier state.
To access System Restore, follow the same steps in the third method to reach the System Recovery Options screen, click on "System Restore" and follow the instruction to finish the operation. Then download the freeware. Click on the Make Bootable Media in the left pane. Disconnect the USB drive after it is done. Right-click the system disk you need to repair and select "Rebuild MBR" from the drop-down menu. Finally, remove the USB stick from your computer and restart your Windows 7 to check whether the Startup Repair loop is canceled or not.
This article shows you how to get rid of Startup Repair Windows 7 loop, no matter whether you have an installation disc or not. If you upgrade Standard to Professional edition , you can enjoy more amazing functions like recovering deleted boot partition , extending system drive, quickly partitioning hard disk without formatting, and more.
Damaged BCD settings If the boot sector is infected by viruses and other malware, the bootloader and booting chain will get damaged. Method 1. Rollback to the recent Windows 7 update If your Windows 7 is stuck into an infinite Startup Repair loop after an update, you can try to roll back the Windows 7 update in the Safe Mode since the Windows cannot boot as normal.
Find out the most recently installed updates, which most likely has caused the Startup Repair loop, 4. The most likely cause of the Windows failed to start error is the missing or corrupted BCD file. The reasons for BCD file missing or corruption are various. There could be disk write errors or power outages and so on. Sometimes bad drivers can cause the Windows failed to start Windows 7 error as Windows begins to load.
The file system itself may become corrupt or damaged due to some reasons. If you turn off a PC while it is in the middle of writing crucial data to the boot sector, you may encounter this Windows 7 failed to start error. When people come across the Windows failed to start error, what they worry about the most is the data saved on the computer.
Well, how to get files off the unbootable computer? Just follow the steps as below. Step 1. Buy Now. Step 2. Step 4. Then boot from the disk. Step 5. Step 6. After launching the Data Recovery function, you can see that all the detected disk partitions are arranged by drive letters.
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