I have the following problem with new Compaq 515 with Windows 7: when headphones are connected to the headphone jack, the laptop speakers will not disable and headphones or external speakers woun't work.
The laptop recognizes headphones (test sounds are coming through) and they can be used for communications, e.g. Skype. The laptop has IDT High Definition Audio CODEC driver's latest version.
Strangely, it is not possible to switch headphones as default device in control panel -> sound. The laptop has following options: Speakers/HP as default device and Headphones (RTC) appear as "Default Communications Device" when selected as default device. I'm not sure this is the problem but it seems strange enough.
Any suggestions? Thanks!