Solution: You likely entered a boot loop, not Fastboot. Force a hard reset by holding Power + Volume Up for 20 seconds. Then retry Method 1, but this time release Power button earlier.
For users who have already rooted their Nokia T10, you can open Fastboot mode directly from Android itself. how to open fastboot mode on nokia t10 better
Alternatively, use a terminal emulator with root access:
Type su then reboot bootloader. Solution: You likely entered a boot loop, not Fastboot
Why this is “better” for rooted users: It bypasses hardware keys entirely, saving wear and tear on physical buttons. Alternatively, use a terminal emulator with root access:
If hardware buttons are inconsistent, use ADB. This method is superior because it bypasses timing issues.
Once the screen shows "Fastboot mode," verify communication with your PC.
If you see nothing: