How to fix Windows 7 without a CDTo boot into no-disk startup repair in the case of your computer running on UEFI mode, follow these steps which is similar but different from BIOS based computers:
Access Advanced Boot Options:
Power up the computer and keep on pressing F8 button before you see your Windows logo.Windows 7 repair (ad)
Click Repair Your Computer on the Advanced Boot Options menu and then press Enter.
Select Startup Repair:
Select the Startup Repair option from System Recovery Options window.
Click Next to begin the repair.
Understanding Startup Repair
What It Can Fix:
Startup Repair is a tool that automatically diagnose and repair problems prevent Windows from booting, such as:
Corrupted registry entries
System files might be missing or corrupted
Disk metadata corruption
Faulty drivers or updates
Limitations:
It will not fix hardware failures or clean installation of Windows issues. It also does not backup personal files or data.
Other Ways of Fixing Windows 7
If your problem isnt solved with the Startup Repair, you may need to try other options:
System restore — Reboot your system to a state when it was working well before the issue started.
Command Prompt: For power users, a console will be provided to run commands such as sfc /scannow which undetected corrupt or failing system files are detected and the most important ones automatically repaired.
Recover Mode: Aber in den abgesicherten Modus zu booten kann helfen, Probleme sowie durch das Laden nur der erforderlichen Systems Dateien.
Conclusion
There are two ways to repair Windows 7 without a CD, by using Recovery tool integrated into the operating system itself. Should these all fail, we might have to use other form of recovery media externally for you. Before performing these steps, it is highly recommended to take a backup of your personal data so as to avoid any further complications cause you loose valuable information.