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#11
Yeah I tried the disabling and uninstalling it just comes right back makes me think it is either my keyboard or mouse. I'll do more troubleshooting tomorrow.
I had the same issue on my laptop under win 7 64 bits.I fixed bu turning off the laptop, removing the battery and unplugging it from the wall.
apparently it's a known issue on the net weither it is under xp or 7.
hope this fixes your troubles.
good luck
i am encountering the same problem.
i am using Windows 7 Ultimate x64 RTM.
i have a Western Digital MyBook Essential 1TB and a Western Digital MyPassport 120GB.
both of them are detected at first.
when i try to copy files from 1TB to my 120GB, it suddenly stops or does not respond.
until when i got o Device Manager and it now displays it is an Unknown Device.
my only way to get them detected again is to do a restart.
but same problem wil occur when i try to copy files again.
i hopes this gets reported to Windows 7 team
i already tried to update my mobo bios and tried to reinstal USB root hub drivers but same problem.'
my machine is Acer M5640
any more ideas?
Note: this problem does not occur when i was using Vista Ultimate x64
If you are receiving the error - Device Unknown - USB device not recognized on any version of Windows.
Unplug the computer from the mains for a minute or two.
This will reset the motherboard and fix the problem.
I NEVER had this problem with WinXP. Anyone else in the same boat?
I found this thread as I have the same USB issue. And guess what, just yesterday I had been searching for a fix for the iTunes sync/freeze issue! So I think the two are related.
See my post at the bottom of this for how I fixed that one:
iPod touch will not sync in Windows 7 - AVForums.com
I'm thinking there is a USB issue on 64-bit Win7, maybe with certain motherboards (I'm also on an nVidia chipset).
Cheers,
Phil
P.S. I also had no probs under 32-bit XP