m17x sound problem, works fine then just stops and i have to click the sound icon in tray. PELASE HELP

yet another problem has come up with my m17x that i got from dell as a refrub, i truly think they didn't install many things.

here is the problem i am having with my SOUND:
This problem as probably been here the whole time this is just the first time iv listened to music/videos on my machine so i just started noticing it.

at first the sound works great, whether im listening to music or watching a video on youtube it sounds great but all of a sudden about 30-60 seconds into it, the sounds just stops, "no sound at all" so i look at the bottom right corner of the screen and click the speaker icon in the tray, and as soon as i do that the sound starts to work again.

after the sound works its about another 30-60 seconds before it goes out again and i have to click the speaker icon in the tray again for it to work "ya no the speaker icon right next to the time"

when i hover over the speaker icon and not click it, it says i have a " IDT High Definition Audio CODEC" is that a previous version? have you ever heard of this problem before? do i need to uninstall and reinstall some programs? or could their be something missing?

 

6.10.0.6233 is the Driver Version I have from Microsoft provided by IDT on 8/26/09 mine works fine.

 

wow thanks so much dude your so helpful! im sure everyone's works fine as well lol

anyone else have any idea what i can do to try and resolve this?

EDIT: i fixed it, i did a hard reset:

1) Turn off power
2) take out the power cord + battery
3) hold the power button for 15 secsonds
4) turn on pc.

i dont understand why this happened?.. hope it doesnt keep happening.