A:AnswerGood question. You cannot add RAM to the Stream. The memory slots were not made user accessible.
Here is the link to more detailed specs on the laptop: http://www.hp.com/sbso/hpinfo/newsroom/Holiday2015PCs/HPStream11r010nrNotebook.pdf
I hope this helps.
A:AnswerWe don't lease items and don't have layaway. The closest thing would be to apply for a My Best Buy credit card and utilize one of our promotional financing offers.
http://www.bestbuy.com/site/misc/financing-rewards/pcmcat102500050032.c?id=pcmcat102500050032
Thanks!