USB Trouble

  • Thread starter Thread starter Rational Philosopher
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Rational Philosopher

Set Up: Windows 2000; 4 port self powered USB hub from one of two USB
sockets, other socket vacant; external USB CD burner and USB WiFi
dongle into hub...

Problem: Computer spontaneously loses all USB devices including the
hub after varying periods of time {can be seconds, can be hours} USB
device unplugged warning appears on screen when it does...

Devices can be spontaneously refound; if rebooted sometimes the devices
are refound and sometimes not...

Device manager before loss: Universal serial bus controllers - Generic
USB hub - Intel 82371 AB/EB PCI to USB universal host controller - USB
mass storage device - USB root hub...

Device manager after loss: Universal serial bus controllers - Intel
82371 AB/EB PCI to USB universal host controller - ! USB device - USB
root hub...

Does anybody have any ideas as to what might be going on here, and if
so any suggestions as to what might rectify the problem...

Many Thanks.
 
I would suggest you have a printer that has a cd storage outlet or a camera
with a micro drive.

Both of these will appear as a "Mass Storage Device". Which is what differs
in your before and after results shown.

One of which needs either updating or re-installing but this time dis arm
your anti virus before loading them.

Good luck
 
I only have the 4 port USB hub, the external CD burner, and the WiFi
dongle connected to the USB; there is no printer or camera...

I believe that the mass storage device listed before the loss is the
external CD burner, and that this and the generic USB hub {4 port USB
hub} are lost by the computer causing the problem...

The computer seems to lose sight of the USB hub and the peripherals
connected to it...

I have no idea what the ! USB device is that appears in the listing
after the loss...

The most peculiar aspect of this problem is that it often self
rectifies.
 
under properties for the USB hubs, turn off the ability to power off to save power.



(e-mail address removed)



Set Up: Windows 2000; 4 port self powered USB hub from one of two USB
sockets, other socket vacant; external USB CD burner and USB WiFi
dongle into hub...

Problem: Computer spontaneously loses all USB devices including the
hub after varying periods of time {can be seconds, can be hours} USB
device unplugged warning appears on screen when it does...

Devices can be spontaneously refound; if rebooted sometimes the devices
are refound and sometimes not...

Device manager before loss: Universal serial bus controllers - Generic
USB hub - Intel 82371 AB/EB PCI to USB universal host controller - USB
mass storage device - USB root hub...

Device manager after loss: Universal serial bus controllers - Intel
82371 AB/EB PCI to USB universal host controller - ! USB device - USB
root hub...

Does anybody have any ideas as to what might be going on here, and if
so any suggestions as to what might rectify the problem...

Many Thanks.
 
mikeyhsd said:
under properties for the USB hubs, turn off the ability to power off to save power.



(e-mail address removed)



Set Up: Windows 2000; 4 port self powered USB hub from one of two USB
sockets, other socket vacant; external USB CD burner and USB WiFi
dongle into hub...

Problem: Computer spontaneously loses all USB devices including the
hub after varying periods of time {can be seconds, can be hours} USB
device unplugged warning appears on screen when it does...

Devices can be spontaneously refound; if rebooted sometimes the devices
are refound and sometimes not...

Device manager before loss: Universal serial bus controllers - Generic
USB hub - Intel 82371 AB/EB PCI to USB universal host controller - USB
mass storage device - USB root hub...

Device manager after loss: Universal serial bus controllers - Intel
82371 AB/EB PCI to USB universal host controller - ! USB device - USB
root hub...

Does anybody have any ideas as to what might be going on here, and if
so any suggestions as to what might rectify the problem...

Many Thanks.

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<DIV><FONT face=Arial size=2>under properties for the USB hubs, turn off the
ability to power off to save power.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV>
<P>&nbsp;</P>
<P><FONT color=#ff0000>
<MARQUEE scrollAmount=2 scrollDelay=9 behavior=alternate width="35%"
bgColor=#ffff00 height=22><A
href="mailto:[email protected]">[email protected]</A></MARQUEE></FONT></P>
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<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV>"Rational Philosopher" &lt;<A
href="mailto:[email protected]">[email protected]</A>&gt; wrote in
message <A
href="Up:&nbsp; Windows 2000; 4 port self powered USB hub from one of two
USB<BR>sockets, other socket vacant; external USB CD burner and USB
WiFi<BR>dongle into hub...<BR><BR>Problem:&nbsp; Computer spontaneously loses
all USB devices including the<BR>hub after varying periods of time {can be
seconds, can be hours}&nbsp; USB<BR>device unplugged warning appears on screen
when it does...<BR><BR>Devices can be spontaneously refound; if rebooted
sometimes the devices<BR>are refound and sometimes not...<BR><BR>Device
manager before loss:&nbsp; Universal serial bus controllers - Generic<BR>USB
hub - Intel 82371 AB/EB PCI to USB universal host controller - USB<BR>mass
storage device - USB root hub...<BR><BR>Device manager after loss:&nbsp;
Universal serial bus controllers - Intel<BR>82371 AB/EB PCI to USB universal
host controller - ! USB device - USB<BR>root hub...<BR><BR>Does anybody have
any ideas as to what might be going on here, and if<BR>so any suggestions as
to what might rectify the problem...<BR><BR>Many
Thanks.<BR></BLOCKQUOTE></BODY></HTML>

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Click to expand...

That sounds very promising, I will try it, but it will take a few hours
of use to prove as sometimes the problem doesnt occur for that long, I
will report back afterwards. Many thanks
 
Went to device manager, selected properties for each USB device in
turn, unable to find the option of turning off the ability to power off
tosave power.
 
any idea why my usb ports show up in device manager but not in my
computer?
Click to expand...
Could it possibly be because hard drives show up in "my computer" and not
usb ports?

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