Windows LiveMail 2012 Contact Import Issue

I have an issue with Windows LiveMail 2012 on my Windows 7 Pro laptop. It will only import a partial listing of my contact list from my flash drive. My contact list contains 4,356 email addresses = 248 KB of information and when I go to import them into the live mail platform it will import about 1008 email addresses and stop. I have repaired the windows essentials 2012 program twice and have uninstalled and installed the program 4 times which has not solved the problem. I also transferred the customer contact list from a flash drive to my documents file on the laptop and it still does not solve the issue. My laptop is a Dell Latitude 2100 with 80 GB hard drive with a 2GB ram. The Windows Live programs works fine though cannot complete the import of the complete contact listing in csv excel format. This is the only laptop I am having issues with on this problem. My other laptops and PC with Windows 7 Pro OS have no problem downloading the contact list complete to Windows LiveMail. Your thought and assistance will be appreciated. Your assistance will be appreciated.  Thankyou.