mmk92
i have an acer aspire 6935 laptop, its very powerful and i love it but i have a problem with the usb ports
When i first turn on the laptop in the morning all usb ports work fine, but after about half an hour of usage they stop working and i get "unkown device" on all ports as well as my built in bluetooth module, wat can i do about it?
m0ei
I'm not sure what might be the real problem.
But try to uninstall all the USB controllers available in the device manager and then restart. Your Pc should automatically reinstall them after scanning for any hardware changes.
It might not work but give it a try.
btw try booting into safe mode and see if the USB ports stops working after a while.
Edit: Check power management if the Pc should turn off this device to save power.
xazbrat
Try this--I have a Sony laptop which has its own USB issues. Unplug your laptop, take out the battery and wait 15 minutes or more (overnight if you can)--then put the battery back in and plug it in and it should take care of the problem (hopefully)
