If the sound coming from the speakers of the computer is very quiet, check how the volume is set on the computer.
Adjust the volume as follows:
At the bottom of the Desktop is the Taskbar. To the far right of it is the so-called System Tray with a speaker icon in it. Click on the speaker.
Adjust the volume with the slider. Click on it and hold down the mouse button while dragging the slider to the right to increase the volume.
Is the sound still soft and have you connected separate speakers? Check whether you can turn up the sound a bit louder via the volume control of the connected speaker.
And if you play videos on YouTube, for example, it may also be that the volume is set very low there. You will often see a speaker icon in the playback window of a video. Clicking this also adjusts the volume.