I have a ipod nano that stays on a apple screen saver

Depending on the model of your ipod it will differ

iPod Classic password
This works on an iPod 5 th gen
Click start control panel scroll to folder options tick in the box to show hidden files and holders

connect your Ipod to your computer
Click start click click on you Ipod to open
then go Ipod controls device there should be a folder saying locked

Right click select rename to open or delete the folder your Ipod should now be open
ipod touch password
Launch the iTunes program on your computer and click "Help" on the main menu.
Scroll down and click "Check for updates."
Close iTunes.
Connect your iPod to the computer using the supplied USB cable.
Launch iTunes, which will display your iPod on the left panel.
Right-click your iPod in the iTunes program and click "Eject."
Close iTunes and detach your player from the computer to unlock it.
http://www.youtube.com/watch?v=5uT8Utk5Tqg
ipod iphone ipad password reset
Unlock an iPod Model A1199
Although the second generation iPod Nano (also known as 2G) uses a four-digit pass code that prevents unauthorized access to your iPod by locking the screen, you can also unlock the device by plugging it into your computer's USB 2.0 port.
When the 2G iPod Nano is connected to the computer it is synchronized, and automatically unlocks the screen according to the official Apple site.
In order to successfully unlock the Nano it must be plugged into the primary computer used for synchronizing content.

Click "Start," "All Programs" and "iTunes" on your PC's desktop, or click "iTunes" on the Macintosh's desktop dock.
Plug the iPod Nano's cable into the docking port on the iPod Nano.
Plug the other end into the USB port on the computer to open iTunes.
Click "Controls" at the top of the iTunes' menu, and select "Eject iPod."
The iPod Nano's screen will be unlocked once it is ejected from your computer.

Unlock an iPod Model A1199
Although the second generation iPod Nano (also known as 2G) uses a four-digit pass code that prevents unauthorized access to your iPod by locking the screen, you can also unlock the device by plugging it into your computer's USB 2.0 port.
When the 2G iPod Nano is connected to the computer it is synchronized, and automatically unlocks the screen according to the official Apple site.
In order to successfully unlock the Nano it must be plugged into the primary computer used for synchronizing content.

Click "Start," "All Programs" and "iTunes" on your PC's desktop, or click "iTunes" on the Macintosh's desktop dock.
Plug the iPod Nano's cable into the docking port on the iPod Nano.
Plug the other end into the USB port on the computer to open iTunes.
Click "Controls" at the top of the iTunes' menu, and select "Eject iPod."
The iPod Nano's screen will be unlocked once it is ejected from your computer.

Manual Guide download
http://manuals.info.apple.com/en_US/iPod_nano_2nd_Gen_Features_Guide.pdf
Unlock an iPod Nano Code
With the latest iPod Nano model, you can set a four-digit code and lock all intruders from accessing your iPod.
In order to use the device's functions again, you need to enter the correct code.
However, if you happen to lose or forget the code, you will need to find another way to unlock your iPod Nano.

Plug the iPod USB cable into the bottom of your iPod Nano.
Plug the other end of the USB cable into a free USB port on your Mac or PC computer.
Open the iTunes program by using the Dock on a Mac or the Start menu on a PC.
Select your iPod Nano from the "Devices" list in the main iTunes window.
Click on the "Sync" button to make a connection between your computer and your iPod Nano.
Click on the "Eject" symbol once the syncing process is complete.
Remove your iPod Nano from the USB cable.
The iPod's lock code will now be reset and you will be able to access all features again.
Navigate to the "Screen Lock" option in the iPod menu to lock your iPod's screen again.
Since your iPod's lock code was just reset, you will be prompted to select a new four-digit code.


iPod Support
http://www.apple.com/support/ipod/

Although the second generation iPod Nano (also known as 2G) uses a four-digit pass code that prevents unauthorized access to your iPod by locking the screen, you can also unlock the device by plugging it into your computer's USB 2.0 port.
When the 2G iPod Nano is connected to the computer it is synchronized, and automatically unlocks the screen according to the official Apple site.
In order to successfully unlock the Nano it must be plugged into the primary computer used for synchronizing content.

Click "Start," "All Programs" and "iTunes" on your PC's desktop, or click "iTunes" on the Macintosh's desktop dock.
Plug the iPod Nano's cable into the docking port on the iPod Nano.
Plug the other end into the USB port on the computer to open iTunes.

Click "Controls" at the top of the iTunes' menu, and select "Eject iPod."
The iPod Nano's screen will be unlocked once it is ejected from your computer.


Manual Guide download
http://manuals.info.apple.com/en_US/iPod_nano_2nd_Gen_Features_Guide.pdf

How to Unlock an iPod Nano Code
With the latest iPod Nano model, you can set a four-digit code and lock all intruders from accessing your iPod. In order to use the device's functions again, you need to enter the correct code. However, if you happen to lose or forget the code, you will need to find another way to unlock your iPod Nano.
Things You'll Need:
iPod Nano Mac or PC computer iPod USB cable
1 Plug the iPod USB cable into the bottom of your iPod Nano. Plug the other end of the USB cable into a free USB port on your Mac or PC computer. Open the iTunes program by using the Dock on a Mac or the Start menu on a PC.
2 Select your iPod Nano from the "Devices" list in the main iTunes window. Click on the "Sync" button to make a connection between your computer and your iPod Nano.
3 Click on the "Eject" symbol once the syncing process is complete. Remove your iPod Nano from the USB cable. The iPod's lock code will now be reset and you will be able to access all features again.
4 Navigate to the "Screen Lock" option in the iPod menu to lock your iPod's screen again. Since your iPod's lock code was just reset, you will be prompted to select a new four-digit code.

Hi friend, Don't worry.. It is easy to solve your problem. Just follow these steps..

1. Plug the iPod USB cable into the bottom of your iPod Nano. Plug the other end of the USB cable into a free USB port on your Mac or PC computer. Open the iTunes program by using the Dock on a Mac or the Start menu on a PC. if you don't have itunes software, get it from here.

• Select your iPod Nano from the "Devices" list in the main iTunes window. Click on the "Sync" button to make a connection between your computer and your iPod Nano.
• Click on the "Eject" symbol once the syncing process is complete. Remove your iPod Nano from the USB cable. The iPod's lock code will now be reset and you will be able to access all features again.
  
• Navigate to the "Screen Lock" option in the iPod menu to lock your iPod's screen again. Since your iPod's lock code was just reset, you will be prompted to select a new four-digit code
  .

If you still unable to solve the issue, click here to know more information
Hope it works.. Don't forget to rate me please..
All the best.. :)

Plug the iPod USB cable into the bottom of your iPod Nano. Plug the other end of the USB cable into a free USB port on your Mac or PC computer. Open the iTunes program by using the Dock on a Mac or the Start menu on a PC.

Select your iPod Nano from the "Devices" list in the main iTunes window. Click on the "Sync" button to make a connection between your computer and your iPod Nano.

Click on the "Eject" symbol once the syncing process is complete. Remove your iPod Nano from the USB cable. The iPod's lock code will now be reset and you will be able to access all features again.

Navigate to the "Screen Lock" option in the iPod menu to lock your iPod's screen again. Since your iPod's lock code was just reset, you will be prompted to select a new four-digit code.
I hope this will help you...

1. Plug the iPod USB cable into the bottom of your iPod Nano. Plug the other end of the USB cable into a free USB port on your Mac or PC computer. Open the iTunes program by using the Dock on a Mac or the Start menu on a PC.
2. Step 2 Select your iPod Nano from the "Devices" list in the main iTunes window. Click on the "Sync" button to make a connection between your computer and your iPod Nano.
   
3. Step 3 Click on the "Eject" symbol once the syncing process is complete. Remove your iPod Nano from the USB cable. The iPod's lock code will now be reset and you will be able to access all features again.
   
4. Step 4 Navigate to the "Screen Lock" option in the iPod menu to lock your iPod's screen again. Since your iPod's lock code was just reset, you will be prompted to select a new four-digit code.
   

this should help

Plug the iPod USB cable into the bottom of your iPod Nano. Plug the other end of the USB cable into a free USB port on your Mac or PC computer. Open the iTunes program by using the Dock on a Mac or the Start menu on a PC.

Select your iPod Nano from the "Devices" list in the main iTunes window. Click on the "Sync" button to make a connection between your computer and your iPod Nano.

Click on the "Eject" symbol once the syncing process is complete. Remove your iPod Nano from the USB cable. The iPod's lock code will now be reset and you will be able to access all features again.

Navigate to the "Screen Lock" option in the iPod menu to lock your iPod's screen again. Since your iPod's lock code was just reset, you will be prompted to select a new four-digit code.

this should get ya going again

uninstall itunes then reinstall it. if that won't fix it uninstall itunes then install winamp (http://www.winamp.com/download).

if that still doesn't fix it restart your ipod (visit apple support for instructions).

If you are new to thee ipod then you will have to download the program called itunes at http://www.apple.com