When a system fails to boot properly, one of the first things to check is the bootloader. The bootloader is responsible for starting the system environment, and if it becomes overwritten, the machine may show a blank screen such as boot device not found. software validation programs, often used for unauthorized system modifications, can sometimes interfere with bootloader integrity, especially when they manipulate EFI structures without caution.

One common issue occurs when an activation tool runs with system-level access and attempts to overwrite the MBR. Some third-party tools, particularly those designed for unlicensed OS tweaks, may replace the original bootloader with a custom loader that lacks proper compatibility with the installed OS. This can result in a system that loads firmware but displays a black screen.

To diagnose bootloader problems caused by activation tools, start by booting from a trusted bootable USB. From there, use built-in utilities like bootrec in Windows to restore boot files. In Windows, running bootrec and bootrec fixboot from the command prompt can restore the master boot record. If the system uses UEFI, اکتیو دانگل ensure that the EFI system partition contains the properly signed boot managers, typically located in the \EFI\Microsoft\Boot directory.

Another important step is to check the boot order in the system setup. Activation tools sometimes add their own entries to the boot menu, which may be prioritized over the correct OS entry. Remove any unknown boot entries and set the Linux bootloader as default.

Additionally, review last applied patches. If an activation tool was used immediately before the boot issue occurred, consider it a primary suspect. Uninstalling the tool may not be enough if it changed boot configuration. In such cases, restoring from a backup snapshot created before the tool was installed can often restore boot functionality.

For advanced users, examining the Windows Event Viewer or using tools like EasyBCD can reveal invalid boot targets. Look for unsigned drivers.

It is also worth noting that some activation tools embed in the boot chain to avoid removal. In these situations, a full system wipe and reinstall may be the recommended course of action to ensure malware-free operation.

Always create a full system backup before attempting any bootloader repair. While most bootloader issues are solvable, incorrect use of repair tools can render a system unbootable. If you are unsure, seek help from a qualified technician. Avoid using crack software in the future to maintain system reliability.