Whenever I open Counter-Strike: Source, my computer starts beeping in random rhythms. Sometimes it beeps continuously (Beeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee....p ). In DotA, it beeps once or twice a game. Here are the temperatures of my computer idling.

GPU: 46Degrees Celsius
Temp 1: -55Degrees Celsius
Temp 2: 46Degrees Celsius
Temp 3: -2Degrees Celsius
HDD: 31Degrees Celsius
Core 0: 50Degrees Celsius
Core 1: 52Degrees Celsius
Core: 46Degrees Celsius
Ambient: 0Degrees Celsius

These are the temperatures while playing Counter-Strike: Source or DotA

GPU: 59Degrees Celsius
Temp 1: -55Degrees Celsius
Temp 2: 54Degrees Celsius
Temp 3: 14Degrees Celsius
HDD: 35Celsius Celsius
Core 0: 58Degrees Celsius
Core 1: 57Degrees Celsius
Core: 56Degrees Celsius
Ambient: 0Degrees Celsius

Please help me out. I ****ing hate this sound so ****ing much.