ApUsbPnp hanging at shutdown

  • Thread starter Thread starter Martin Murray
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M

Martin Murray

OK, I did a clean install of Windows XP on my Fujitsu N6010. I installed
all the device drivers from Fujitsu and have done every Windows Update.
None of the devices appear to have complaints.

There is a USB mouse attached to the laptop, but both the mouse and the
internal touchpad are enabled and working.

Periodically, and I think this only occurs after the system has been on a
while (and maybe only after the screen blanks after inactivity), things
begin to go wrong.

Graphics begin to get flaky sometimes, the LAN stops working sometimes, or
maybe the Start button brings up a garbled list of options, but there is a
problem. When I press control-alt-delete to bring up TaskManager, I get an
error. If I try to Shutdown from the Start Menu, I am told I don't have
permission to shut it down. But I can press control-alt-delete and to
Shutdown from that menu and then I get a Program Not Responding window
referencing "ApUsbPnP". So, I'm guessing that is at the core of the
problem. I have no idea what the heck that is!

Any help will be appreciated. Thanks in advance.

Martin Murray
 
Martin said:
OK, I did a clean install of Windows XP on my Fujitsu N6010. I installed
all the device drivers from Fujitsu and have done every Windows Update.
None of the devices appear to have complaints.

There is a USB mouse attached to the laptop, but both the mouse and the
internal touchpad are enabled and working.

Periodically, and I think this only occurs after the system has been on a
while (and maybe only after the screen blanks after inactivity), things
begin to go wrong.

Graphics begin to get flaky sometimes, the LAN stops working sometimes, or
maybe the Start button brings up a garbled list of options, but there is a
problem. When I press control-alt-delete to bring up TaskManager, I get an
error. If I try to Shutdown from the Start Menu, I am told I don't have
permission to shut it down. But I can press control-alt-delete and to
Shutdown from that menu and then I get a Program Not Responding window
referencing "ApUsbPnP". So, I'm guessing that is at the core of the
problem. I have no idea what the heck that is!

Any help will be appreciated. Thanks in advance.

Martin Murray
Click to expand...

The few articles I found on "ApUsbPnP" suggest you have a trojan horse.

In general, any device that stops working after hibernation might need this:

Open Device Manager, open the properties on the device, or each of your
USB ports, click the Power tab, and deselect "Allow the computer to turn
off this device to save power".
 
AdAware 2007 did not find anything suspicious in the system and I have been
VERY careful besides. I don't tthink it is a trojan horse.
 
Martin said:
AdAware 2007 did not find anything suspicious in the system and I have been
VERY careful besides. I don't tthink it is a trojan horse.
Click to expand...

OK.. But I also suggested a fix for loss of some device usage after
hibernation.

Oh, and there's this.. Adaware won't catch everything. Nor will
Spybot, or any other software. A Trojan horse, in particular, is seldom
caught by anti-spyware software; it's usually caught by antivirus
software. But it's just as usual that, if you are infested, the
infestation disabled your av software, and runs a fictitious, or
incomplete scan so you think you're not infected. You might want to do
an online scan just as a precaution. I hate to keep harping on the
malware "solution" though.. here's the few posts I've found on that file:

http://groups.google.com/groups/search?q=ApUsbPnp&qt_s=Search+Groups
http://www.google.com/search?tab=gw&q=ApUsbPnp (52 posts, not the 120+
suggested. Most are in foreign languages.)

Serato Scratch (Just one of those threads.)
http://www.techsupportforum.com/mic...s-xp-support/91094-what-apusbpnp-program.html
 
Actually, it MAY be the problem with a device being shutdown to save power,
even though the laptop is on wall-juice. I have disabled that feature in
Device Manager as you recommended, and we'll have to wait to see.

I connected a USB hard drive at one point and the system did not see it
until I rebooted, indicating the post may have been asleep.

Where do I find an online malware scanner?
 
Martin said:
Actually, it MAY be the problem with a device being shutdown to save power,
even though the laptop is on wall-juice. I have disabled that feature in
Device Manager as you recommended, and we'll have to wait to see.

I connected a USB hard drive at one point and the system did not see it
until I rebooted, indicating the post may have been asleep.

Where do I find an online malware scanner?
Click to expand...
Try one of these free online virus scans:

This one has a choice of a Quick or a Complete check. Use the Complete
check.
http://www.pcpitstop.com/

Symantec
http://security.symantec.com/default.asp?productid=ssr&langid=ie&venid=sym

<url:http://security2.norton.com/us/home.asp?j=1&venid=sym&langid=us&plfid=20&pkj=IHBEXIBVEMBQAUWZKTK>
then click the Security check link.

http://housecall.antivirus.com/ free online virus scan

http://www.ewido.net/en/
 
OK, it is not because the USB ports went to sleep and it is not malware as
far as I can detect. It is also not because the LAN went to sleep, 'cause I
turned that feature off also. Additionally, I reinstalled the ATI video
drivers.

The problem still occurs. What the heck is ApUsbPnp???
 
Martin said:
OK, it is not because the USB ports went to sleep and it is not malware as
far as I can detect. It is also not because the LAN went to sleep, 'cause I
turned that feature off also. Additionally, I reinstalled the ATI video
drivers.

The problem still occurs. What the heck is ApUsbPnp???
Click to expand...

You might do a search for it on the hd. If found, right-click, click
Properties and see if it has any information on the author, etc. What
folder is it found in? That could be a clue..
 
Martin said:
OK, it is not because the USB ports went to sleep and it is not malware as
far as I can detect. It is also not because the LAN went to sleep, 'cause I
turned that feature off also. Additionally, I reinstalled the ATI video
drivers.

The problem still occurs. What the heck is ApUsbPnp???
Click to expand...

One other thought; it could be associated with a specific hardware
component, one that plugs into the USB port, possibly a router or modem.
 
Nothing on the hard drive by that name and no running process by that name
right now either.
 
Martin said:
Nothing on the hard drive by that name and no running process by that name
right now either.
Click to expand...

Click Start, Run, type REGEDIT, click OK. Press the Home key, press F3,
type the name of the file into the search pane. Click "Find Next", and
see if there's a reference to the file there. Please report back if you
find anything on it.

BTW, this thread also mentions a Fujitsu laptop. It could be one of the
drivers for that manufacturer's devices. In that case, you might try
their support. Also look for updates from Fujitsu.

http://support.fujitsupc.com/CS/Portal/support.do?srch=FAQ
 
Elmo said:
Click Start, Run, type REGEDIT, click OK. Press the Home key, press F3,
type the name of the file into the search pane. Click "Find Next", and
see if there's a reference to the file there. Please report back if you
find anything on it.

BTW, this thread also mentions a Fujitsu laptop. It could be one of the
drivers for that manufacturer's devices. In that case, you might try
their support. Also look for updates from Fujitsu.

http://support.fujitsupc.com/CS/Portal/support.do?srch=FAQ
Click to expand...

Whoops! Forgot the thread link:

http://forums.mozillazine.org/viewtopic.php?t=102651&sid=394de95298320eb8f51d065d8c8f96e2
 
OK, I've read through those threads. Does not seem like malware from that
conversation.

My Fujitsu drivers are all up-to-date. No ApUsbPnP text in the registry.

My Virtual Memory setting was a custom number for some reason, so I've
changed that to automatic. Is there some number I probably should be using?
 
Martin said:
OK, I've read through those threads. Does not seem like malware from that
conversation.

My Fujitsu drivers are all up-to-date. No ApUsbPnP text in the registry.

My Virtual Memory setting was a custom number for some reason, so I've
changed that to automatic. Is there some number I probably should be using?
Click to expand...

No, let Windows handle it.
 
Posts like this are why I dislike bottom posting. How about some snipping,
at least?
 
OK, the problem is still hapening. The virtual memory change also made no
difference.
 
Martin said:
OK, the problem is still happening. The virtual memory change also made no
difference.
Click to expand...


Why did you reinstall? Were there problems beforehand?

What error message?

Graphics problems could be caused by the ps, the graphics card, or
the motherboard.

The hd could be the problem; that could cause fonts to be corrupted.
 
Martin Murray said:
OK, I did a clean install of Windows XP on my Fujitsu N6010. I installed
all the device drivers from Fujitsu and have done every Windows Update.
None of the devices appear to have complaints.

There is a USB mouse attached to the laptop, but both the mouse and the
internal touchpad are enabled and working.

Periodically, and I think this only occurs after the system has been on a
while (and maybe only after the screen blanks after inactivity), things
begin to go wrong.

Graphics begin to get flaky sometimes, the LAN stops working sometimes, or
maybe the Start button brings up a garbled list of options, but there is a
problem. When I press control-alt-delete to bring up TaskManager, I get
an error. If I try to Shutdown from the Start Menu, I am told I don't
have permission to shut it down. But I can press control-alt-delete and
to Shutdown from that menu and then I get a Program Not Responding window
referencing "ApUsbPnP". So, I'm guessing that is at the core of the
problem. I have no idea what the heck that is!

Any help will be appreciated. Thanks in advance.
Click to expand...

I haven't reviewed the whole thread so if this is a duplicate my apology.

What happens in safe mode? If you start in safe mode and then immediately
logoff does the error occur?

In normal mode if you start the computer, login and immediately logout
without running any programs does the problem occur?

If it doesn't happen in safe mode but happens in normal mode upon a
login/logout, do some clean boot troubleshooting:

Clean Boot Troubleshooting

How to Troubleshoot By Using the Msconfig Utility in Windows XP
http://support.microsoft.com/?id=310560

How to perform advanced clean-boot troubleshooting in Windows XP
http://support.microsoft.com/?id=316434

How to perform a clean boot in Windows XP
http://support.microsoft.com/?id=310353

Other questions to consider. What happens is you create a new admin level
account? Still occur? A new limited user account - still occur?
 
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