That means you have a filesystem error most likely caused by a fault on the sdcard. My experience is that you have to go with brand name cards. My choice is Sandisk 8gb cards wich have worked fine for me for long time whereas i have had kingston memories fail within a day.
Try another brand card and make sure it’s not a cheap chinese copy…..
Do you know can I install noobs rasbian to rasberry or do have to install rasbian manually. Last time I tried to install noobs setup stops allways 5-75%.