How To Repair Windows 7 Dual Boot

"How do I repair Windows 7 without an installation disk?"

"My laptop came with win7 home premium and I purchased a legit downloadable win 7 pro upgrade nigh a year or and then ago. Information technology worked well until last calendar week. Afterward a sudden ability failure, I cannot kick it successfully equally normal and stuck on the blackness screen. Now I need to repair Windows but I don't accept an actual deejay; and so is there any way to perform Windows seven boot repair without the original Windows deejay? Thank you!"

Overview of Windows 7 kick failure

For Windows 7/viii/10/eleven boot failure, there are many reasons you need to consider. For instance, BCD (Boot Configuration Data) files are missing or corrupt; Arrangement files are damaged, MBR (Master Boot Record) gets damages and other unknown causes. When Windows fails to boot, y'all might receive various mistake messages like "Reboot and Select Proper Boot Device", "Your PC/Device needs to exist repaired", "No bootable device found", etc.

Freeware to repair Windows 7 boot without CD or DVD

As for Windows 7/8/x/xi repair, in most cases, you need to insert a Windows installation DVD/CD and reboot your calculator from it. Then you can perform a Startup Repair, run CHKDSK to check disk for error, and even use the Command Prompt to fix MBR or BCD.

And so you might wonder "is it possible to repair Windows 7 startup bug without a Windows installation disk?". Absolutely "Yes"! For such a task, the free sectionalisation director- AOMEI Partition Assistant Standard can help you a lot. It is free but powerful disk manager software for Windows 11/10/8/7/XP/Vista users. With it, you can create a bootable USB bulldoze first, then boot your computer from it, and repair Windows by checking system disk and rebuilding MBR under WinPE environment. Below is a stride-by-stride guide:

Function one. Create a bootable USB drive for repairing Windows startup problems

Plug a bare USB to a working estimator, then download, install and run AOMEI Division Assistant on that PC. Click the "Magician" on the top side and choose "Create Bootable Media Wizard". Then follow its prompts to accomplish the procedure. (PS.: USB will contain pre-installed AOMEI Division Assistant).

Function 2. Boot Win7 reckoner from the destination USB drive

Insert the bootable USB to the Windows 7 computer with boot problems. Power it upwards and constantly press Del (F2 or another specific cardinal) to enter BIOS. Change boot priority, set the USB drive as the first boot device and boot figurer from destination USB. Relieve the changes and restart your computer into Windows PE environment.

If you desire to boot from the USB for once, press a functional key (F11 or F12, the key tin vary on different PCs) to enter boot bill of fare. Then, choose USB drive and press Enter to kicking from it.

Function 3. Repair Windows 7 kicking in the WinPE mode

Later on entering the WinPE surroundings with the bootable USB drive, you will be in the primary interface of AOMEI Partition Assistant Standard. At present you can use it to repair damage MBR, i of the almost common reasons for Windows 11/10/8/7 kicking issues.

Step one. Once you log in, you will run across the loaded AOMEI Partition Banana. Right-click the system disk and select "Rebuild MBR".

Footstep 2. Choose an appropriate MBR mode for your current operating organization and click "OK".

Step 3. Back to the main interface, click "Utilize" and so "Proceed" to execute the pending performance.

Autonomously from rebuilding MBR, the freeware as well allows you to check whether there are some bad sectors on the system partition, you lot can exercise equally below:

Step 1. In the main console of AOMEI Sectionalization Banana, right-click the system partition (usually C drive) to select "Advanced"> "Cheque Partition".

Step 2. Tick "Cheque partition and fix errors in this partitioning by using chkdsk.exe." and striking "OK".

Step 3. Await for a few seconds and minutes to complete the segmentation checking and fixing process.

Or you can right click the entire organization disk to choose "Surface Test" to brand a deejay surface test.

Summary

Nether the assistance of AOMEI Division Assistant Standard, yous tin can perform Windows 7 boot repair without Windows installation disk. The same methods tin also be used to fix Windows eleven, Windows ten or Windows viii kick issues. But in order to avoid Windows seven boot failure in the future, you can clone windows 7 to new hard bulldoze for a fill-in and quick recovery.

Besides, if y'all upgrade to AOMEI Division Banana Professional, you tin easily convert MBR to GPT without deleting partitions, or GPT to MBR without losing data, recover lost/deleted sectionalisation, overstate arrangement drive without rebooting the figurer, migrate Os to SSD, and then on.