Windows defaults to write-behind caching, holding data in a memory buffer before writing it to disk. Disabling this function will increase your system performance by writing data immediately to disk. To disable this function, right click on My Computer and choose Properties, or open Control Panel and select System. Select the Hardware tab and click the Device Manager button. Click the plus sign next to Disk Drives and select a drive. Choose Properties and uncheck Write Cache Enabled. Repeat for all drives in your system