Judging from the sound, it is likely that the life of your hard disk is coming soon. Kaka's sound is the sound made by the magnetic head when reading data on the disk. Because the head is aging, there will be that kind of broken sound, which makes people feel particularly uncomfortable.
Easy recovery can be used to detect whether the hard disk forms bad tracks, life, etc. I suggest you change your hard disk. At least the important materials should be burned and preserved. It doesn't matter when you live in Takuwa. From your description, I believe that the health of your hard disk should be below 60%. You can think I'm alarmist. I also believe that if you take this computer to the relevant maintenance department, they will also tell you: Never mind, I will just reinstall the system for you. However, if you get any shop that only repairs machines, it will remind you of the life of your hard disk and your important information.
Here, I'll give you some advice.
1 Use CD to burn important files.
2 use efficiency source software or EASYRecovery to completely repair the computer hard disk. And separate the physical bad tracks and shield them.
3 Reinstall the operating system. (non-Ghost version)
4 Memory is greater than1g. Turn off the Aero effect.