Change the 6 present tense verbs to the past tense.  The computer works fine until I be gin playing music through it. Then  it slows down to a halt and freezes . It is really frustrating. I just  want it to work!

The computer worked fine until I began playing music through it. Then it slowed down to a halt and froze. It was really frustrating. I just wanted it to work!

Explanation:

This is what we need to know about the Simple Past Tense to answer this question.

1. The verb to be presents two forms in the past: was and were. The form was is used for the persons I, he, she, and it. Were is used for the rest.

2. Regular verbs in the past will have -d, -ed, or -ied added to their ending. The ones that end in e receive -d. The ones that end in consonant + y drop the -y and receive -ied. And the rest receives -ed.

3. Irregular verbs in the past have each a different form. There isn't much we can do but memorize them. For example: begin - began; freeze - froze; go - went; speak - spoke.