This just started three weeks ago and I never had the problem in the three and half years running the desktop computer. When I browse in chrome from one site to the next the sound distorts on You Tube or from my Spotify software. I used the DPC Latency Checker and discovered the problem is in the Network Adapter, but that has the most recent update.  I would appreciate any suggestions. 

More details about my computer:

Component Details Subscore Base score
Processor Intel(R) Core(TM) i3 CPU 540 @ 3.07GHz 6.9 4.9
Determined by lowest subscore

Memory (RAM) 4.00 GB 5.9
Graphics Intel(R) HD Graphics 4.9
Gaming graphics 1696 MB Total available graphics memory 5.3
Primary hard disk 534GB Free (922GB Total) 5.9
Windows 7 Home Premium

System
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Manufacturer Dell Inc.
Model Inspiron 580
Total amount of system memory 4.00 GB RAM
System type 64-bit operating system
Number of processor cores 2

Storage
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Total size of hard disk(s) 922 GB
Disk partition (C:) 534 GB Free (922 GB Total)
Media drive (D:) CD/DVD

Graphics
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Display adapter type Intel(R) HD Graphics
Total available graphics memory 1696 MB
Dedicated graphics memory 64 MB
Dedicated system memory 0 MB
Shared system memory 1632 MB
Display adapter driver version 8.15.10.2622
Primary monitor resolution 1600x900
DirectX version DirectX 10

Network
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Network Adapter Broadcom NetLink (TM) Gigabit Ethernet