Win7 computer often hears hard drive stop and start sound how to eliminate

Win7 computer often hears hard drive stop and start sound how to eliminate:

1, open the System "Control Panel", the "view mode" modified to "large icon", and then click "Power Options";

2, into the Power Options window to the user's "preferred plan" as an example, click on "Balance" after "Change plan settings";

3, then click "Edit Plan Settings" window "Change advanced power settings";

4, in the Power Options dialog box, expand Hard disk-"Turn off the hard disk after this time" and you can see that the default setting is to turn the hard drive off after 20 minutes, you can reset it as needed, or simply set it to "Never" and click "OK" to set it.