You can manually reset your device with the click wheel center and menu buttons pressed at the same time after unswitching the hold button on the bottom. If that doesn't work use the iTunes software to reset the device.
Try to reset the Device using the iTunes software. I own a iPod Nano 3rd Gen myself and I was screaming at Apple to fix the battery charging problem. The next update resolved that. I had never had the screen go out mysteriously but it seems that you can manually reset your device with the click wheel center and menu buttons pressed at the same time after unswitching the hold button on the bottom.
At the very top of the keyboard you will find the volume controls... Mute, Volume Down and Volume Up as indicated by the F3, F4 and F5 Keys. Make sure that you have nothing plugged into the headphone jack. Make sure that your Bluetooth Sound is off. If you cannot hear a Bong sound when you first start your computer your Speaker settings are either muted or there is something severely wrong with your sound unit inside your computer.
Ok, I myaswell add one for the books... Antistactic Mat? Sure if you intend to Bench a computer that you are working on. Installing and Removing parts as necessary while providing a workspace for the job. Antistatic wristband? Sure if you want to handle static sensitive devices. But you don't really have to go to all of that extreme if you just want to do it at home and quick. The computer case itself when plugged in and turned off still provides ground just make sure the power switch either on your Power Bar or the back of your Power Supply is turned off. Using one hand to touch the metal case will discharge static. Watch out for sharp edges. If you are unsure, leave it alone. Use at your own risk. Repairs to a "ZAPPED" computer can be costly. I personally never had any trouble.