Need help please

have the CTC printer , was working fine till yesturday then started making funny nosie and jamming on printing, then when runing nozzle calibrate it jams and locks half way just power it up to have another play see what issue is an its just got two line of black squared across the LED screen
was goig to try a firmware update but currently my laptop dont even see the printer

HELP only had it a couple of weeks and the seller is not replying to my emails

any idea PLEASE what can i try