Volume Controls Itself

i thought upgrading to 7 would take care of it, but it carried over to the new operating system. here's the 2 problems i have, and i believe they are tied together or i wouldnt mention the browser one. volume control. at completely random times, the volume controller will just take over and turn itself all the way down or all the way up. any attempt by me to move it it just resets, if i slide the bar to the top it'll slide it back to the bottom, and vice versa. more often than not it turns the sound down. but once in a while it maxes my volume. the only way i can regain control of the sound is to reboot. i only mention this cuz it happens simultaneously with the sound problem so im pretty sure they're related. my browser will act normally until the problem kicks in, then it acts as if someone is hitting the "back button" and holding it down. i cant go forward a page, i cant open a web page, i cant do anything, it stays on my homepage forever. you can see it try to go to a new page but then poof its back on the home page. this makes browsing or using the internet impossible.