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Acer Aspire One - dosen't detect internal network card
This is the netbook which I used at school the past 4 years, and when I graduated, we were allowed to keep the netbook. The default Acer OS was reinstalled, which was incredibly slow and had tonnes of bloatware on it, so I installed my own copy of Windows 7 using a USB. After the install was done, there was no network connection, so when I went to connect it to my home network, it said "No wireless network devices installed" which is complete bullshit. Its used a wireless network card built into it to connect to the internet every day for the last 4 years. I went to connect it to my router through an ethernet cord, but it also refused to acknowledge this cord was plugged into it. I then tried it with a different ethernet cord which was using my desktop to connect my Xbox 360 to the internet. I checked the device manager, and there wasn't any tab showing called "network devices". However, under "other devices", it says there is an "Ethernet controller", a "Network controller" and a "PCI simple communications controller". I plugged in a usb wifi adapter, which instantly failed to install as the computer couldn't find any driver,s but then i inserted the USB adaptor i used for my PC, and it installed and connected to the internet. I then tried to find drivers for the "ethernet controller", but it found none. I went to Acer's website and tried to install the Atheros Ethernet driver, but it said that it failed to find any compatible hardware.
I tried to put the small Ethernet adaptor that I had first tried into the computer, but now the computer refused to recognise it at all. If I could install that driver, then it would be acceptable for me to use it with that adaptor plugged in.
How do I fix this problem?