Computer help plz

GamerDan

Reputable
Jan 2, 2015
8
0
4,510
Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz 3.50GHz
im having a problem where my mouse cursor and my speakers are acting funny my speakers are making funny sounds and my mouse cursor is laggy plz plz plz help i dont wanna throw money away on a really awesome computer
my model is ENVY pheonix
we didnt build it we bought it from a store
called harvey norman and even since i got it its been working fine after 8 months+
its been going a little wild not because its old just for some reason its acting funny plz help i beg