1. Trackpad - try reinstalling the driver for it. Test it in safe mode as well.

2. Audio - reinstall the driver

3. If using WinXP, try System Restore to the last time they worked.

4. If no go, run the 32-bit Diags by booting from the Dell Resource CD that came with the system and check them out.

5. If it still doesn't work, observe everything and call Tech Support to have your palmrest (includes touchpad) and speakers (possibly motherboard) replaced.

For your screen, try pressing + or change your resolution to its maximum setting.

Peace!

Tim,

Thank you for using the Dell Community Forum.

This issue is not related to the keyboard replacement.  It is a video issue, however the solution you seek is to perform the [Fn] - [F7] key combination.  A complete list of these functions is posted here.