Before my join date,I had only EVER used a computer for a couple of weeks,an old P3 a mate gave me to see what "it" was all about.
The next week I bought X1 Studio,and a Dell XPS 15 i7 Sandy Bridge laptop,a Tascam US600,some KRK gen2 5" Rokit monitors,and had literally NO SOUND,for 23 days.
It,eventually turned out to be a dud Tascam interface,and the only other interface the store had to swap,was a cakewalk UA25-EX,a USB 1.1 unit that has worked flawlessly,although the RTLatency with my listed desktop[much more powerful than the laptop] is 12.6 milliseconds.
A hell of a lot of problems are usually going to be user error,wether you're prepared to accept this or not.
Even though my desktop is way better,I'm actually using my Dell laptop mostly,as now after 13 months with X1,i'm way more adept,at setup,of the Operating System[W7 x64]and the Daw[X1d Producer Expanded]and I have everything duplicated,on both machines,and all is now totally smooth,the only thing that is not,is "backing up" on the laptop,and this is a W7/Dell thing,that is dependent on the media,wether it be an external USB HDD,or a USB stick[which is the only thing working correctly ATM],so problems are always going to appear,the best thing I can say is DO NOT PANIC-which you did with your original post.......it takes sometimes,a long time to get all 3 things to interact correctly-computer/OS/DAW,and this is the same for all the differring products.
I bought my desktop instead of getting a much better interface[same price]and I love the fact,that I now have a duplicate machine,that will work no matter what goes wrong,rather than spend all my money on one setup,which originally was going to be an Apple Macbook Pro,but had I gone that route,I would have had no money for anything but the computer,so I weighed up the options,and learned that since Sandy Bridge,Windows machines were way more cost effective,it just takes time,patience,and less panic,and all will work out...eventually,it is NOT a Sonar X1d fault however.
Bob