HELP STUDENTS TO PRINT FILE

Today, Tuesday,  March 7, 2012. I  help students to print. "The students that want to print, be queue (antri), in order to computer can arrange the instruction," I say. Students of Yunior High School busy to print their duty. The students that print the file include Kaka, the students that need help to maximize his capability on ICT. He seem slow, relaxed (santai). Seldom the printer error. I help students to handle it. Seldom I restart the computer  of server.

There are some students that had work hard but the computer can not print. They seem very regret. "What is happen, my students?" I ask. "Oh sir, we work on computer no.6, but  it is  in fact can not print." they say with regret.
As teacher what can I do?
I have flash disk. I give it to him. He can print.