I understand you have some connectivity issues with the Intel® WiFi Link 5100.
In this scenario we recommend checking the settings for the wireless adapter and the access point as explained in the following articles:
How to access and configure advanced Wi-Fi adapter settings
What are the recommended settings for 802.11n connectivity?
How do I improve my 802.11n wireless performance?
Possible interference by other wireless devices may impact 802.11n performance
Access Point (AP) firmware updates may resolve wireless network issues
You may also consider updating the Intel® wireless driver:
I hope the suggestions help.