Atheros AR5007EG constantly drops connection on Windows 7
I've loved my little 8.9" Acer Aspire One since the first day I got it about a year ago, with one exception... the WiFi card would occasionally just vanish completely from the device manager.
The standard fixes found by Googling never worked. It was rare enough that I didn't mind too much before, however since I've installed Windows 7, the Atheros AR5007EG card drops constantly when I transfer a file of any substantial size.
I tried every version of Windows 7 driver for this bad boy and nothing seemed to work. So I just bought an installed an Ultimate N WiFi Link 5300, it was very easy to install, check youtube... there are literally tons of videos on how to open and access your Aspire One, it's not as scary as you may think... I used this video, as I prefer using my library card to separate the keyboard and face, rather than a screwdriver that I see in so many other videos.
Happily, the new card is rock solid, and the hardware switch shuts it off and on as it did the old card. The speeds are great, I haven't yet tested the "N" speed, but connected to my home "g" router, it gets a steady 2.7MBps, which is roughly 22Mbps, which is the max my cheapo Buffalo router seems to push.
Finally I can download my movies from my home server to my netbook without jacking into the RJ45!
The card itself is around $40 shipped from a U.S. e-tailer (like Amazon), but you can get them cheaper on Ebay if you don't mind waiting for them to ship from China. Don't forget to buy a 3rd antenna!
Update: Be cautious, it appears as though there are at least 2 versions of this card, a "normal" one, as well as one made for HP & IBM/Lenovo machines. I'm unsure how to differentiate between them as the model number is the exact same, verify with any seller first.