No boot disk windows 7

Step 1. Step 2. Access the "Boot" tab using the right arrow keys on your keyboard. And move your system hard drive to the top of the boot order list.

The partition where the operating system is installed is called as primary partition. It needs to be set as active for an OS boot success. So if it is set as inactive by mistake, the "no boot device found" issue will be triggered. Thus please set it back as active. Insert the Windows installation DVD into your computer and boot from it. Select the language and keyboard layout, and click on "Repair your computer". Select "Command Prompt" on the subsequent window. Step 3. In the elevated Command Prompt window, write the following commands one by one and press "Enter" afterward.

To ensure that you boot from the right bootable hard drive, you can press a certain key to enter the BIOS interface while restarting to check the boot order. After that, save changes and restart the computer to see whether the error disappears. If the error still exists, try to reset BIOS to default settings by steps given below:.

If you still meet No boot device available error, you can try to perform a hard reset to restore functionality. Here are detailed steps:. Look at the following steps:. If Startup Repair not working for Windows 7 , you can try to run Bootrec commands to fix MBR and boot sector within the following steps:. Thus, you can use it to create a bootable device with itself embed. Then, you can boot the Windows 7 computer from the created bootable media and rebuild MBR.

Connect a USB drive to a working computer. Check if you can boot to the desktop and perform a system restore from Safe mode. Step 2 You may access the link below and follow the steps and try to boot the computer in last know good configuration and check if it works. Boot the computer from Windows 7 disk. You will have to select repair your computer. Select command prompt. Let us know the results. How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site.

This site in other languages x. 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. If there are system restore points or system images, you can revert your computer to a state before the "Windows 7 won't boot" issue occurs. In general, the system restore feature won't affect your personal files, but it will remove apps, drivers, and updates installed after the restore point was created.

But if you use system image recovery option, all files in your PC including personal files, apps, system information, etc. That means you may lose data. If the above method also fails to repair your PC, you can also try reinstalling your PC.