How Do I Fix the 2 Red Rings of Death?

My xbox has the 2 red rings and I let it cool off for hours at a time and it still has the rings. So I dusted it out with a vacuum and it still has the 2 red rings. Please help me fix this.

Suggestion:

Well, to prevent it don't set it on a carpet for more than 5-6 months. The carpet dust gets caught up in the heat vent. And I'm sorry, but you can't fix it ,sorry.