Needle keeps breaking machine asking to rethread upper thread

[chrissy520 2]

Dear Embroiderers,

I have broken 2 needles now and machine kept asking something about upper thread.  2 needles. 

What could be wrong? Is the machine not accepting the thread? I am using a cotton thread with a satin finish. I was watching the thread go through and noticed the thread is not jamming at the spool of thread but somewhere inside the machinery  (above the needle)- I hope you get what i mean.

will be grateful for your advise on this.