Windows

1. Click the 'Start' menu and 'Control Panel.'
2. Double-click the 'Administrative Tools' icon. If the 'Administrative Tools' icon is not available, click the 'Switch to Classic View' link, then double-click 'Administrative Tools.'

3. Double-click the 'Services' shortcut icon.
4. Right-click on 'ClipBook' and choose 'Properties.'
5. Click the 'Logon' tab. Place a check in the box next to 'Allow service to interact with desktop.' Click the 'Apply' button, then click 'OK.'
6. Right-click on the 'ClipBook' service and choose 'Restart' or 'Start' to restart the Windows clipboard.
7. Check the status of the 'Network DDE' service by clicking on the name of the service and looking in the 'Status' column. If the status for 'Network DDE' reads 'Stopped', right-click on it and click 'Start' or 'Restart.' Close the Services window.

1. Write down the specific errors you see on your computer screen. When you view an error on your computer, each message will most likely tell you the particular piece of software responsible for the issue. For example, if your computer lets you know that you have a runtime error, this means one or more of the programs on your computer are not compatible with each other. However, you just need to go to your 'Start' menu and choose 'Settings' to know which programs do not work well together. Then, go to your computer 'Control Panel' and click your mouse twice on the words 'Add or Remove Programs.' Open up the list of programs you see, click every item and then press 'Add/Remove.' Select 'Yes' to complete this process.
2. Run your Disk Defragmenter. This program allows you to fix files that Windows has a tough time finding because they are all spread out on your operating system. Go to the 'Start' menu, then hit 'Programs,' 'Accessories,' 'System Tools' and finally click 'Disk Defragmenter.' Choose the particular drive with which you want to work. Click 'Defragment' and hit 'Enter.'

3. Install the latest Windows updates. Since you own an older version of Microsoft Windows, the age of your operating system may cause errors every now and then. Click 'Start' and go to 'Settings.' Press the words 'Windows Update.' Adhere to the instructions that you see appear on your computer screen to finish the update process. Reboot your laptop or desktop to make the changes permanent.

1. Go to your 'Start' menu. Select 'Computer' by left-clicking on it.
2. Right-click on the drive you want to check. By default, your hard drive should be the C drive. Select 'Properties' from the menu.

3. Select the 'Tools' tab. Go to 'Error-checking' and select 'Check Now.' You may have to enter a password. Check 'Automatically fix file system errors' to ensure Vista fixes errors with files and folders in your hard drive. You may want to simultaneously perform a disk check. Select 'Scan for and attempt recovery of bad sectors' to check for physical errors on the actual hard drive. The physical check takes longer to complete, but it may be worth the wait. You should check both 'Automatically fix file system errors' and 'Scan for and attempt recovery of bad sectors' to maximize the your chances of success.
4. Click 'Start.' The process takes some time, so remain patient and allow it to complete.

1. Download a replacement Ntfs.Sys file from the System Files Home website. Also, download and install WinRar if you don’t have an unzipping program.
2. Save the Ntfs.Sys download to your desktop or “My Documents” folder. Open it with WinRar and unzip it to a folder you can easily remember.

3. Restart the computer in safe mode by repeatedly tapping “F8” before Windows loads.
4. Choose Safe Mode from the list of options and wait for the computer to completely load.
5. Locate the Ntfs.Sys file you downloaded; right-click on it and select “Copy.”
6. Go to 'My Computer,' then click 'C:,' then 'Windows,' then 'System 32.' Paste the file into the folder (right-click in an empty area of the folder and select 'Paste').
7. Restart the computer to see if the error reoccurs.

1. Close all running programs and restart your computer by clicking 'Start,' hovering the mouse cursor over the arrow to the right of 'Shut Down' and clicking 'Restart.' Restarting your computer may solve the problem. If not, proceed to Step 2.
2. Close all running programs on your computer, including Intuit QuickBooks and Point of Sale.

3. Click 'Start,' 'All Programs,' 'Accessories' and 'Run.'
4. Type 'Services.msc' into the Run dialog and press 'Enter.'
5. Click 'OK' and 'Continue' in the user account control dialog.
6. Scroll down in the list of services, right-click 'Print Spooler' and click 'Properties.'
7. Click the 'Startup Type' box and click 'Automatic.'
8. Click the 'Start' button under 'Service Status.'
9. Click 'OK.'
10. Close the services window.

1. Open the Web page in Internet Explorer. When the error occurs, a yellow icon displays in the bottom status bar. Double-click the icon to review the line of code that is causing the error. Internet Explorer also displays the line number where the error message is triggered.
2. Right-click the HTML or JS page that contains your JavaScript function. Click 'Open With,' then click your HTML or JS editor.

3. Scroll down to the line number listed in the Internet Explorer error window. You must identify the JS syntax error to fix the coding. For instance, if you are missing a closing or opening bracket, the JS engine displays an error and you must add these characters to stop the errors.
4. Click the browser's 'Tools' menu and click 'Internet Options' in the list of options. Click the 'Security' tab at the top of the resulting window.
5. Click 'Custom Level' to open the security options. Click 'Enable' for 'Active Scripting' in the 'Scripting' section. Click 'OK' to save the settings. This option stops JavaScript errors caused by security in the browser.

Windows XP CD Use
1. Eject the disc tray. Place the Windows XP CD on the tray and close the tray. Restart the PC. Press the 'R' key when the 'Welcome to Setup' screen appears. Enter the administrative password in the text field on the pop-up window that appears. Press 'Enter.'
2. Enter 'md tmp' without the quotes in the text field on the screen. Press 'Enter.'

3. Enter 'copy c:\windows\system32\config\system c:\windows\tmp\system.bak' without the quotes in the text field on the screen. Press 'Enter.'
4. Type 'copy c:\windows\system32\config\software c:\windows\tmp\software.bak' without the quotes in the text field on the screen. Press 'Enter.'
5. Enter 'copy c:\windows\system32\config\sam c:\windows\tmp\sam.bak' (without quotes) in the text field on the screen. Press 'Enter.'
6. Type 'copy c:\windows\system32\config\security c:\windows\tmp\security.bak' without the quotes in the text field on the screen. Press 'Enter.'
7. Enter 'copy c:\windows\system32\config\default c:\windows\tmp\default.bak' (without quotes) in the text field on the screen. Press 'Enter.'
8. Type 'delete c:\windows\system32\config\system' without the quotes in the text field on the screen, and then press 'Enter.'
9. Enter 'delete c:\windows\system32\config\software' into the text field. Press 'Enter.'
10. Type 'delete c:\windows\system32\config\sam' (without quotes) into the text field on the screen, and then press 'Enter.'
11. Enter 'delete c:\windows\system32\config\security' without the quotes in the text field. Press 'Enter.'
12. Type 'delete c:\windows\system32\config\default' (without the quotes) and press 'Enter.'
13. Enter ' copy c:\windows\repair\software c:\windows\system32\config\software' without the quotes in the text field on the screen. Press 'Enter.'
14. Type 'copy c:\windows\repair\sam c:\windows\system32\config\sam' into the text field on the screen. Press 'Enter.'
15. Enter 'copy c:\windows\repair\security c:\windows\system32\config\security' without the quotes into the text field on the screen. Press 'Enter.'
16. Type 'copy c:\windows\repair\default c:\windows\system32\config\default' in the text field on the screen, and then press 'Enter.'
17. Enter 'Exit' without the quotes in the text field. Press the 'Enter' key. Wait as the PC restarts. Enter the administrative password into the text field of the Windows XP Home Edition startup screen. Press the 'OK' button to continue the startup process.
Windows Explorer Procedure - Part A
18. Click 'Start.' Select 'Windows Explorer' from the pop-up window.
19. Click the 'Tools' tab at the top of the window that appears. Click 'Folder Options,' which is located below and to the left of 'Tools.' Click the 'View' tab at the top of the window. Click the 'Show hidden files and folders' checkbox that is located beneath 'Hidden files and folders.' Uncheck the 'Hide protected operating system files' checkbox located below the 'Show hidden files and folders' checkbox.
20. Click 'Yes' in the dialog box that appears. Double-click the PC's main hard drive icon that is located in the left column of the window.
21. Double-click the 'System Volume Information' folder in the left column. Double-click one of the folders beneath 'System Volume Information'--this folder should be at least a day old. Double-click on one of the 'Snapshot' folders located beneath the folder you just clicked on.
22. Drag the '_REGISTRY_USER_.DEFAULT' file out of the folder and into the 'Tmp' folder that is located beneath 'Windows,' which is also on the left side.
23. Drag the following files out of the folder and into the 'Tmp' folder:'_REGISTRY_MACHINE_SECURITY''_REGISTRY_MACHINE_SOFTWARE''_REGISTRY_MACHINE_SYSTEM''_REGISTRY_MACHINE_SAM'
24. Rename the following files:'_REGISTRY_USER_.DEFAULT' to 'DEFAULT''_REGISTRY_MACHINE_SECURITY' to 'SECURITY''_REGISTRY_MACHINE_SOFTWARE' to 'SOFTWARE''_REGISTRY_MACHINE_SYSTEM' to 'SYSTEM''_REGISTRY_MACHINE_SAM' to 'SAM.'
25. Close the window by clicking the red 'X' in the upper right corner. Restart your PC.
26. Press the 'R' key when the 'Welcome to Setup' screen appears. Enter the administrative password in the text field on the pop-up window that appears. Press 'Enter.'
27. Enter 'del c:\windows\system32\config\sam' without the quotes in the text field on the pop-up window. Press 'Enter.'
28. Enter 'del c:\windows\system32\config\security,' without the quotes in the text field on the pop-up window. Press 'Enter.'
29. Enter 'del c:\windows\system32\config\software' without the quotes in the text field on the pop-up window. Press 'Enter.'
30. Enter 'del c:\windows\system32\config\default' without the quotes in the text field on the pop-up window. Press 'Enter.'
31. Enter 'del c:\windows\system32\config\system' (without the quotes) into the text field on the pop-up window, and then press 'Enter.'
Windows Explorer Procedure - Part B
32. Enter 'copy c:\windows\tmp\software c:\windows\system32\config\software' without the quotes into the text field on the pop-up window. Press 'Enter.'
33. Type 'copy c:\windows\tmp\system c:\windows\system32\config\system' in the text field on the pop-up window, and then press 'Enter.'
34. Enter 'copy c:\windows\tmp\sam c:\windows\system32\config\sam' (without the quotes) into the text field on the pop-up window and press 'Enter.'
35. Type 'copy c:\windows\tmp\security c:\windows\system32\config\security' in the text field on the pop-up window, and then press 'Enter.'
36. Enter 'copy c:\windows\tmp\default c:\windows\system32\config\default' (without the quotes) into the text field on the pop-up window. Press 'Enter.'
37. Enter 'Exit' without the quotes in the text field. Press the 'Enter' key.
38. Wait as the PC reboots. Enter the administrative password into the text field of the Windows XP Home Edition startup screen. Press the 'OK' button to continue the startup process.
39. Click 'Start.' Select 'Accessories' from the 'All Programs' pop-up window.
40. Click 'System Tools' at the top of the window that appears. Click the 'System Restore' checkbox. Click the 'Restore to a previous RestorePoint' checkbox. Close the window by clicking the red 'X' in the upper right corner. Restart your PC.

1. Close the error message window concerning the C000021 fatal system error.
2. Open the Start menu and click on 'Shut Down.'

3. Select 'Restart' from the list of options and click the 'OK' button.
4. Hit the 'F8' key on your keyboard when prompted to on the reboot screen.
5. Use the arrow keys on your keyboard to scroll down and select the 'Last Known Good Configuration' option from the reboot screen, and then hit 'Enter.'
6. Use the arrow keys again to select the operating system that you wish to reboot your computer with, and hit 'Enter' again. The Windows operating system will restart and restore to the last working version, which will eliminate the C000021 fatal error alert.

1. Insert your Windows installation CD in the appropriate drive.
2. Open the search feature by clicking 'Start' > 'Search.'

3. Specify the directory to search in by selecting your CD drive, which is 'D:' by default. Search for 'NTVDM.EX_,' 'NTVDMD.DL_' and 'EXPAND.EXE' on the disk.
4. Copy the three files to your hard drive. Click 'Start' and type 'cmd' into the 'Run' box. Click 'OK.'
5. Type 'expand ntvdm.ex_ ntvdm.exe' into the command prompt and press 'Enter.' Type 'expand ntvdmd.dl_ ntvdmd.dll' and press 'Enter.' Close the command prompt.
6. Copy the expanded files into the 'C:\Windows\System32' folder. If Windows prompts you to replace the current files, click 'Yes.'

1. Click the 'Start' button.
2. Select 'Control Panel.' The Control Panel opens up in a new window.

3. Click 'Programs.'
4. Click 'Programs and Features.' A list of currently installed programs appears on your screen.
5. Click 'iTunes' from the list of programs.
6. Click 'Uninstall.' According to Apple's website, uninstalling iTunes and reinstalling the latest version will fix the 1601 error.
7. Open your Internet browser and visit apple.com/itunes.
8. Click the blue 'Download iTunes' button in the upper right-hand corner and follow the onscreen directions to download and install the latest version of iTunes. This should prevent future 1601 errors when you restore your iPod Touch.