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1. How do I optimize Windows 7 for audio? [top]
a) Roll back to the Win7 legacy FireWire driver:

Go to: Start >Control Panel >System and Security>System>Device Manager

Expand "IEEE 1394 Bus host controllers"

Select your IEEE 1394 (FireWire) controller

Click on the icon "Update Driver Software" at the top.

Select "Browse my computer for driver software"

Select "Let me pick..."

Select "1394 OHCI Compliant Host Controller (Legacy)"

Choose Next and it will install.
b) Set your computer's power for high performance:

The CPU may not be running at full speed all of the time. This can have a detrimental effect on your computer's audio performance. To set your computer's power for high performance:

Go to: Start >Control Panel >System and Security>Power Options

Create a Power Plan>High Performance

Choose "High Performance"

Click the "Change plan settings" button.

Make sure both power options are set to "Never"
c) Disable system sounds

System sounds can interrupt audio. Make sure that they are disabled by doing the following:

Go to: Start >Control Panel >Hardware and Sound>Sound

Go to the "Sounds" tab

Under "Sounds scheme" select "No sounds"

Uncheck "Play Windows Startup sound" if checked

Click "Apply" then "OK"
d) Enable DMA (Direct memory access) on each IDE channel

This allows data to be transferred directly into the memory and can improve audio performance. To ensure that DMA is enabled:

Go to: Start >Control Panel >System and Security>System>Device Manager

Expand the IDE ATA/ATAPI controllers category then double click on each one of the IDE channels

Under the “Advanced settings” tab, make sure the “Enable DMA” box is checked in Device Properties

Please note: this only applies to some hardware and if this option is not available, you should not worry about completing this step.

e) Set processor scheduling to "Background services"

This will improve the performance of your audio drivers on your computer.

Go to: Start >Control Panel >System and Security>System

Go to "Advanced system settings" and select "Settings" under "Performance"

Choose the "Advanced" tab

Set processor scheduling as "Background Services"

Click "Apply" then "OK"
f) Disable Windows Firewall, anti-virus and spyware software

Disabling Windows Firewall, anti-virus and spyware software ensures that no interference will occur during audio recording or playback and also ensures that the maximum resources are available.

Note: To remain secure while your firewall and anti-virus software are disabled, it is strongly recommended that you temporarily disconnect from any internet connections when working with audio. Don't forget to turn it back on when you want to browse the internet.
g) Disable Visual effects

The visual features in Windows 7 can use resources that could otherwise help to improve audio performance. It's good idea to disable some of the visual features by doing the following:

Click on “Start” and in the “Search “ box type: "SystemPropertiesPerformance" and press "Enter"

On the visual effects tab select "Custom"

Un-check: "Animate windows when minimizing and maximizing" to help prevent glitches when minimizing and maximizing.

You can also experiment with disabling other visual effects in the custom list to see how they might improve audio performance.

Once finished, press "OK"

If you wish to optimize your Windows 7 graphics for the best performance click on "Adjust for best performance". While this will improve computer performance, it should be noted that Windows 7 will appear a lot less aesthetically pleasing.
h) Disable Windows services and third-party devices:

One way in which you can free up valuable resources in order to improve audio performance is to disable unnecessary Windows 7 services:

Go to: Start>Control Panel>System and Security>Administrative Tools and select “Services“

In the “Standard" tab, click at the top of the "Startup type“columnto sort by Automatic, Automatic (Delayed Start), Disabled. or Manual.

Click on the Stop button in the Menu bar to stop a service

After configuring all services that you desire to change, reboot to see the effects of your tweaking.

Note: Do not use “msconfig” to stop services. It basically is "disabling" a service. Use the above procedure and set to "manual" instead for testing purposes.
i) Disable third party devices:

Disabling unnecessary third-party devices can also free up valuable resources and clear up annoying pops and clicks. (See 3. How do I diagnose the cause of pops and clicks? below.)

Go to: Start >Control Panel >System and Security>System>Device Manager

To disable an unessential device right click on it and choose disable

Note: Do not forget to re-enable this device if it is needed at a later time

j) Install the latest BIOS and chipset driver for your motherboard

BIOS: Basic Input/Output System is an electronic set of instructions that a computer uses to successfully start operating. The BIOS is located on a chip inside of the computer and is designed in a way that protects it from disk failure.

You will need to know the manufacturer of your motherboard and what chipset it has. Look at your computer specifications manual or use “Sandra”.

Go to the chipset manufacture's website to download and install the latest chipset driver for your motherboard.
Much of your hardware is built right into the motherboard and depends on the chipset to make it work properly. Installing the proper chipset drivers will improve the performance of your IDE and/or SATA busses, improving data transfer speeds.

Chipset drivers also have a great deal of influence over your systems power saving features. Improper or out-of-date drivers can cause your system to hang on entering or exiting hibernation or sleep mode.

Most popular chipset URLs:

Intel chipset

Via chipset

AMD chipset