I was reading an older post and the OP seems to have found the solution.
Original Post: No Audio Output Device Installed
I have an HP Pavillion2845 Laptop.
When I hit F10, I enter the BIOS setup. However, I can't locate the tab to Enable/Disable the sound card. I tried pressing other Function keys at the startup (DEL too) but to no avail. I feel like I'm missing an obvious step.