downloaded Ubuntu for windows.Windows would not allow installation.Unblocked file and tried to continue now recieving message that these files already exist check log file and gives the name of file.Stuck not sure what to do please help.

I suggest you download and MD5 test the Ubuntu ISO, then install magicdisk or daemontools and mount the IOS (Windows isprimitive and needs 3rdparty tools to do basic stufflike this) and then run the installer from there.

not sure what your saying this was done thru the windows link on this website did not use an iso just want to remove this partial instal is there a less complicted way...................?

You should be able to use programs and features (or add/remove programs to to uninstall it).

You can manually remove it with:

How do I manually uninstall Wubi?

Remove C:\ubuntu and C:\wubildr*

In Windows XP you need to edit C:\boot.ini and delete the Ubuntu/Wubi line. For Vista, you can use EasyBCD to edit the boot menu. Alternatively you can modify the boot menu via Control Panel > System > Advanced > Startup and Recovery and pressing "Edit". For Windows 98 you have to edit C:\config.sys and remove the Wubi block.

To remove Wubi from the add/remove list, delete the registry key: HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\Wubi

An easy method of removing this registry key is to paste the following text into a plain editor such as Notepad, close and save the file as something like removeWubiKey.reg (you may wish to go to Folder Options > View and disable the "Hide file extensions for known file types" option to check that the .reg extension has been applied correctly). Then you can perform the rest automatically by opening the file in the normal Windows manner, or choosing the "Merge" option from the right click context menu. Note: The formatting is rather strict, so copy the text exactly for best results. You may need to be logged in as the administrator to delete the key, depending on the version of Windows you are using. User Account Control in Vista may also ask for permission, in the typical fashion.

REGEDIT4

[-HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Wubi]
After deleting the registry key, Ubuntu may still appear in the program list. If this is the case, you may be asked if you would like to remove the item from the list.

Source:
https://wiki.ubuntu.com/WubiGuide

Thank you for this I did find this information on my own however it is not showing in the add/remove programs I think because it did not complete its mission and actually fully install. I can find all the files in C:\. It doesn't show as a choice when I start the computer either. I did attempt to look for the boot file but I cannot find it.........I feel so jam up on this.

Never mind fixed it thank you