All of a sudden I lost audio. When I call, the other party cannot hear me and vice versa. Microphone seems to be o.k., I tried it on another computer. Echo Sound test tells me that I do not have a sound card, or that it cannot be accessed. That cannot be, because I can listen to the radio or CD. I restarted the computer, upgraded software, tried different settings for my speakers, still nothing. Headphones do not work either. Any Idea what else should I do?
Operating System: MS Windows 7 Home Premium 64-bit
CPU: Intel Pentium E2210 @ 2.20GHz 46 °C
Wolfdale 45nm Technology
RAM: 3.0GB Single-Channel DDR2 @ 333MHz (5-4-4-14)
Motherboard: eMachines EMCP73VT-PM (CPU 1)
Graphics: HP x20LED @ 1600x900
256MB GeForce 7050 / nForce 620i (Acer Incorporated [ALI])
Hard Drives
313GB Hitachi Hitachi HDT721032SLA SCSI Disk Device (ATA)
Optical Drives
ATAPI DVD A DH16A6S SCSI CdRom Device
Audio
Realtek High Definition Audio