No network adapter showing in device manager

[rrpc]

I have an acer M5641 desktop and i do not have a network adapter , i reinatall windows 7 basic premium and no success, can youi help me ? thanks Roger my e-mail is rrpc66@gmail.com thanks

 

[RealBeast]

You will need to reinstall the chipset and LAN drivers that you can download from Acer support. Also, any others that you need like Modem, TV Tuner, etc. There a quite a few: http://support.acer.com/us/en/product/default.aspx just enter desktop/aspire/and you model then operating system.