PdG, at the bottom of the PC is the COA from MS and a tag from Compaq that has the P/N.
1. Write that number down.
1a. Goggle HP.
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2. Select Drivers & Downloads.
3. Enter the number next to the P/N into the box under the words Find my product.
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4. Press go.
5. It should find one match.
6. Click on the plus sign.
7. Click on the blue product listed.
8. Click on Go under Option 2.
8a. it may ask to select OS, select MS.
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8b. it will ask to select Version - select Vista or select XP
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9. On the Audio line click the plus sign.
10. Download all Conexant drivers listed - just in case.
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11. Right click on the downloaded driver select Troubleshoot compatibility.
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12. If the first driver gets an error that it can not be used, try the second driver.