LAPTOP FROM HELL

My laptop is EXACTLY 19 days old. I use it monday to friday for work only (8 hours in total). Today it refuses to switch on. I took it back to the store I bought it from, as it is under warranty - they told me they need to take it in for 21 days. How do i work in the interim? If something dies after 19 days, I do not want it fixed and returned to me. This was not a bottom of the range laptop. it is not the greatest either, but for a R7000 computer, I expect it to work at least 21 days! I am joking now but if I do not, I will throw the damn thing in the pool. I bought the Core i5 btw.