no it will not affect the file you were downloading. Do you have powersaving features on? does your monitor perhaps go in sleeping mode after 10 minutes?
get a http://www.amazon.com/Creative-HS800-Fatal1ty-Gaming-Headset/dp/B002DS4HTM/ref=sr_1_1?ie=UTF8&qid=1415407837&sr=8-1&keywords=fatality+gaming+headset and save up for a monitor ASAP :)