If you know about 3d printers could you me fix mine?

i have a monoprice, mini version 2. i've tried cleaning it (3 times) making sure the filament is all the way in (the plastic), i've tried calling the people at monoprice and looking it up.

no matter what i do the extruder won't let out any filament when i click print and or extrude.

does anyone know what the problem is and can you explain what i can do to fix it? ?

Shown below is the start of a coding region within the fist exon of a gene. 5'--3' 3'--5' how many cas9 pam sequences are present?

What is the difference between windows 7 and windows 10?

Multiple choice project create a program with two multiple choice questions. 1. users have two attempts only, show attempt number each time. hint: while loop with break control. (20%) 2. only one correct answer for each question, use switch case for each question. (20%) 3. show total score after the two questions are answered. hint: . (20%) 4. user have options to answer the two questions again if first attempt score is not 100%. hint: if statment. (20%) 5. use string method .toupper() to allow users to enter with lowercase or uppercase letters. (20%) 1. where is the capital of the state of florida? a. orlando b. tallahassee c. miami d. tampa b 2. where is walt disney world park located in florida? a. orlando b. tallahassee c. miami d. tampa a