Please delete the entire My Dell folder from Program and Features before downloading the software again. .
In case there is no latest update available, the system will exit from the program. In case the system is overheating, I recommend you to clean the air vents with a can of compressed air and make sure the system is placed on a hard surface where there is good air circulation.
With regards to the drivers for your computer, click on the link below, enter the system service tag and click submit. Select the Operating system from the drop down list to get the drivers for your computer. http://dell.to/QjjZDA
If you want to download the Ethernet driver, click on the link below to download the driver:
Revert for further queries.