Error screen and frozen screen

defective screen display, change by an expert,professional

Hold the select and menu buttons to reset the iPod.

Like all electronic devices, iPods sometimes freeze and become unresponsive. Sometimes iPods lock up when they're dropped on the ground or come in contact with water, but less destructive accidents may also cause them to stop working. All versions of the iPod have a way to reset their hardware should they stop playing music or refuse to turn off.

Check the "Hold" switch on the top case of your iPod to be sure it isn't activated. An iPod will appear frozen and unresponsive if this feature is activated. A lock symbol will appear on your iPod's screen if it is in Hold mode. Switch the "Hold" button on and off once. Place one finger on the "Menu" button and another on the center button. Press both buttons at the same time and hold them for up to 8 seconds. Release the "Menu" and center buttons once the Apple logo appears on your iPod's screen. Try releasing the buttons and pressing and holding them a second time if the logo does not appear, as it can sometimes take several tries to reset a severely frozen iPod. Press and hold the top button and the center "Home" button on a frozen and unresponsive iPod touch to reset it. Hold the buttons for at least 10 seconds and wait for the Apple logo to appear on the screen, then release the buttons. Connect your iPod to its powerblock or a computer if it is still frozen. Wait 5 minutes and then try to reset it. Sometimes an iPod can appear frozen when its battery runs out and just needs a few minutes of power to start working again. Hope this helps.

If the unit is frozen the first thing I would recommend is removing the batteries and see if its ok when you reinsert them.

It could be, although if it hasn't been modified in anyway it could be the battery. If your son has used this battery so many times, say a couple months or years, the motherboard or chip could malfunction, causing shortage of power. Try getting a replaceable battery, or if you know another friend or guy that has a son/daughter with an extra battery try using it to save money. If it's not the battery, could be the firmware, or version. Hope these solutions help, let me know if they do or don't.
Good Luck!

oh god....
other than calling costomer support or teachnition
i don't have an answer(witch is unusual for me =[ )

Im not 100% sure about this...I own a R4 myself. What I do notice if you use the wrong type of SD Card(Anything above 2GB) or use it in the wrong type of R4(SDHC Kernel in a Non-SDHC Card) It tends to get stuck at that loading screen.

Sometimes you can remedy this by taking the R4 out and the sd card out and using a air can or blowing on the parts in between(inside the DS, Inside the R4) and try it and it will sometimes fix that. Also a corrupted transfer of the kernel or a bad kernel can do that too.

Hope this helps.

Btw here are a few Kernel Links:
R4DS(Non-SDHC): www.r4ds.cn
R4DS(SDHC): www.r4ds.us

Hope this helps

try reseting your ipod dude

my ipod wont turn off or nothing i tried downloading music like i always do and my ipod shows that picture of the plug and it says under it "ok to disconnect" it wont turn off or nothing