case front panel

So my pc case front panel audio jack was working fine still afternoon now all of sudden i can hear only on left side i thought my head phone is faulty checked with other headphone same problem continues some times i dont even hear any audio BUT when i halfway plug my headphone and change the...

Hi, I bought this corsair carbide 275r about 4 months ago and when i peeked through the front panel side hole the dust filter is really dusty. The problem is I can't even open the front panel... I've tried to watch it on Youtube but I still can't open it. It just made my fingers hurt. Please...