I've reinstalled my Windows (I've now Windows 10 pro), formatted my disk etc. And now I've checked the task manager, I've seen that the processor speed is always 2.4ghz even if the usage is 1% (when it's idling). The processor is Intel Core i7-3630QM 4 cores 2.4ghz. I tried resetting bios settings to default but I can't Access bios because the laptop is not mine and I don't know the bios password (don't post that I should get it, it's a situation that I just can't go to bios). Is there any way to fix this as it was working normally before. And what damage could this cause?