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annoying usb net drop no complete shutdown error
hello, my name is chris.
i have recently upgraded my machine.
Windows 7 Home Premium x64 (inc Service pack 1)
Asus Crosshair IV Formula
AMD Phenom II 1100T x6
Corsair Vengeance 4x 4gb 1600mhz
XFX Radeon HD6870
2x WD 20EARS 2TB Sata drives
1x sata HP 107d
Netgear RangeMax WPN111 Wireless USB 2.0 Adapter (PROBLEMATIC)
Netgear router
right, the problem...
after a 2-3 hours of constant downloading the network stops. even the software cant find any networks (not even the neighbours signals). when i unplug the usb adapter windows does not recognise that it has been removed. when i put it back in, windows does not recognise that the adapter has been inserted.
i then try turning the machine of via the start menu (i have tried shutdown, restart and logoff then shutdown). Either way, windows feezes at the 'windows is shutting down' screen. i have waited 10 minutes but nothing happens. when i reset the machine (i am ashamed of that by the way) the machine starts up correctly and then i remove then insert the adapter back in the machine. only then dows windows see all the networks in the area and i am then able to access the internet.
do you know what is wrong and how i can fix it.
ps, the motherboard had something called ROG GameFirst v4.53.1548 which somehow manages to increase my download rate by quite alot. about 100kb/s normally its about 46-48.
thank you for your help.
EDIT:
also, i have noticed that internet explorer 9 x64 'forgets' all my 'remembered' pass words. i have BitDefended Anti-virus PRO 2011 running. with Windows Defender and firewall running.