This is one one of the most essential part of the laptops because RAM(Random Access Memory ) is used to process and in the boot stage of any laptops. This website gives to best solutions and steps to change or upgrade your ram. Still if you have any confusion or want to talk to the Dell USA support then call or go their website.
If this method is not working you can do go to Dell customer support and you can talk to him . You also download drivers manually step by step
step 1: Open Google Search
step 2: Search Dell Laptop Display Driver
step 3: Open site enter model model number
step 4: Download you display driver by choose suitable options
step 5": and Download it Simple