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Audio and Video cards.

Video Cards

Your colour depth needs to changed. Right-click on the desktop and then select the properties option. Alternatively, go to Start > Control Panel > Appearance and Themes > Display.
Click on the settings tab. You should see the colour quality option.
Pull down the menu, and select the 32bit option (highest quality).
Click ok. Windows will then ask you for confirmation. Click O.K.

Right-click on the desktop and then select the properties option. Alternatively, go to Start > Control Panel > Appearance and Themes > Display.
Click on the settings tab. You should see the screen resolution slider.
Slide the bar to your desired resolution.
Click O.K. The screen will turn dark. Once it reappears, Windows will ask for confirmation. If you are happy with the resolution, confirm, If not, click cancel, and repeat the process until you get your desired resolution.

Right-click on the desktop and then select the properties option. Alternatively, go to Start > Control Panel > Appearance and Themes > Display.
Click on the settings tab
Click on the ADVANCED button.
Choose the monitor tab. Here you can set the refresh rate from the pull down menu. Then click APPLY.

If this occurs frequently, it means that your screen refresh rate is too low. Right-click on the desktop and then select the properties option. Alternatively, go to Start > Control Panel > Appearance and Themes > Display.
Click on the settings tab
Click on the ADVANCED button.
Open the ADAPTER tab, click the PROPERTIES button.
Open the DRIVER tab. It will show your current graphic card driver.
Click the UPDATE DRIVER button. Windows’ Hardware wizard will then guide you through the driver update process.

Set a restore point before installing Direct X. This is because Direct x CANNOT BE UNINSTALLED.
Go to microsoft's website and search for direct x.
Click the download button. You then get the option to save or to run the file.
Either way, after the download has finished, run the file and follow the installation process.

As always, check you power chords and connections first.
Check if your speakers are connected to the right jacks.
Check all you volume controls.
Then, check your windows volume control. Uncheck any mute options.
If there is still no sound, you may want to use headphones to test. This is to see if it’s a speaker problem.

If you have a problem hearing anything out of your speakers, be it too loud or too soft, you need to check and adjust your volume settings.

There should be a speaker icon on the bottom right of your screen, which is your task bar. If you don’t see it, go to START > CONTROL PANEL. There should be a SOUNDS AND AUDIO DEVICES icon. Double-click on the icon.
On the volume screen, check the PLACE VOLUME ICON ON TASKBAR ICON. This is so that you don’t have to access the control panel every time you want to adjust the volume.
Click Ok.
Once that is done, you will see the speaker icon on your task bar. Double-click the icon.
There, you will see sliders for you to adjust. Uncheck all the mute options and adjust the sliders until you get the volume of sound you want.
If you only see one slide, go to the OPTIONS tab and lick properties.
On the next screen, click the PLAYBACK option. Check the boxes of the devices that you want to adjust volume.

A Graphic Card

If colour's don't appear as they should, change the colour depth.

Change your screen resolution here.

Change the refresh rate of your monitor if yound that your eyes strain too much.

Check the manufacturer's site to see if there are any driver updates.

Check your volume levels if you can't hear anything from your speakers.

Check with headphones to see if its a problems with your speakers instead.

Click this volume icon on your task bar to adjust your volume levels.

Adjusting your volume levels through the use of sliders.