2. Then restart and press the hotkey to enter the bios system (if not, you can check the tutorial link above), set the USB flash drive to start for the first time, and press F 10 to save and exit;

3. At this time, the computer will restart to enter the pe system selection interface of the general pe toolbox. Here, we choose the seventh item "Run the menu of the hard disk memory check scanning tool";

4. Then select "Run MHDD version 4.60 hard disk detection";

5. After entering the "MHDD" interface, we can see that our hard disk has been lent, which is the sixth item. Enter "6" and press enter;

6. Then press F4 twice to start the "MHDD" hard disk detection.

Here we can see there are many hard disks on the right. The first one indicates that the hard disk response time is less than 3 milliseconds, and then push them in turn. If there are seven situations that happen more than 500 milliseconds or after 500 milliseconds, then the hard disk will kneel down. We mainly scan the partition where the system is located, which is in the front of the hard disk. For example, it uses 1TB hard disk, and the partition of C disk where the system is located is 50G. We only need to scan the first 5% of the hard drives. If the top 5% is ok, then the slow running of the computer has nothing to do with the hard disk, so we must find the reason elsewhere.