My speakers are plugged in but it says they are not my audio drivers are up to d

I recently upgrade to win 7 my sound is not working my drivers are up to date it says my speakers are not plugged in but they are please help desperate

Plug the speakers into the headphone jack, try it again.
Open your audio software and check all the settings.
Double click the speaker icon in the lower right hand of the desktop, this will bring up the mixer, or single click to bring up the volume control.
But in case the volume is missing, corrupted, or the audio is otherwise non-functional:
you check whichever audio was installed:
click start, control panel, add remove programs, look at the list...
which audio software is shown on the list? delete it, restart the computer.

now visit the motherboard manufacturer or computer manufacturer's website
look up your computer drivers by model number
download the latest audio drivers, save on the desktop...
turn the antivirus off,
if you have multiple security programs installed, turn them all off
(your driver may not install if security systems are turned on)
now load your new audio driver, restart, turn the antivirus back on.