I ordered a Tenda W311U (exactly the same one that I've had working perfectly on my system for a year or so) for my nephew's laptop and at first, I thought it was going to work - plugged it in and was connected straight away. I went for that adapter because it seems to be the only one that wants to work with my system - I've tried others that are supposed to be Win 7 compatible, yet the Tenda is the only one that wants to work.
So then, I plugged the other one into my PC and that dropped the connection on the laptop (full five bars, but with a yellow exclamation mark)! Upon checking with ipconfig /all, I discovered that the laptop was reading the new adapter with the old one's MAC Address - so I assumed that must be what's causing the issue.
So, I uninstalled the adapter, driver
and all - hoping that plugging in the new adapter would now read as its proper MAC Address (because each adapter is supposed to have its own one, isn't it?) Now, the damn thing won't 'connect' at all. I tried it in my system, same thing. I tried installing drivers
from the disk, drivers from online, I tried rebooting the router, tried various security settings and nothing works - the only adapter that wants to work either with my system or my nephew's is the old W311U! I know this can't possibly be the case, but it's like the machines have formed some kind of relationship with this particular adapter!
Along with the slowdown and typing lag I seem to be getting, I'm beginning to think of doing a fresh Windows 7 installation - not formatting the disk, just reinstalling Windows 7 in the hope that'll 'reset' everything and it'll recognise the new adapter - as well as get rid of the typing lag problem. It's worth a shot; I doubt if the new adapter is faulty, because as I said, it was connecting before provided my PC wasn't online, so if I send it back, they'll probably test it as not being faulty, so I'll incur the postage charge and still be stuck with an adapter that I can't get to work.
I'm at my wits end with these bloody adapters, so if anyone can help that would be great. If you reckon a fresh Win 7 installation might sort everything out, then that's what I'll have to do.
I've scanned for malware etc - all is clean.