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UAA MYSTERY COMPAQ C765EM

Posted on 2011-09-30
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Last Modified: 2013-12-01
Having installed vista on my compaq765em the sound and modem are no longer being detected. The microsoft uaa bus is not listed in device manager under system devices, the section for Sound Video And Game Controllers is absent from the device manager. If i try to install the conexant drivers from the hp website , it fails telling me that there are no devices for the drivers (audio or modem). I have checked for hidden devices but none are listed and there is only one called keyboard filter ???. I could not find a driver on the conexant website, and oddly ,the hp website says goto the Realtek website and download the latest HD AUDIO DRIVERS. I did this and installed it, but it didnt make any difference. I then downloaded various softpaq fixes of the WINXP uaa driver, installed these but still no joy. I do see the drivers listed in the filestore, hdaudbus.sys.
I have tryed to enable the hdaudbus service but it tells me it is either disabled or has no devices associated with it.
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Question by:bochaka
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by:nobus
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you installed all drivers from this link?  http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?os=2093&lc=en&cc=us&dlc=en&sw_lang=&product=3716451#N150

can you post a picture of device manager, showing what's there and what not?
also -did the sound and modem work before ?
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by:Merete
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You installed Vista?
Was this an upgrade or repair? or reinstall?
Was it a clean install  new partition?
you didnt get any mainboard discs with it?
Driver Compaq Presario C765EM Notebook PC for Windows XP-Vista
http://www.driverstools.com/hpcompaq-drivers/driver-compaq-presario-c765em-notebook-pc-for-windows-xp-vista/
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by:Davis McCarn
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ALWAYS go to the manufacturers site for drivers!  You wouldn't believe how many messed up systems I see because folks used "driver genius" or some 3rd party utility.
NOBIS gave you the correct link and you need to install the BIOS, chipset, audio, video, and network drivers, then do nothing but Windows Update until it says there aren't any more.
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by:bochaka
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Hi
 Yes, that is the hp page where I downloaded all the drivers. All vista updates have been installed from .the microsoft update website. Pictures of Device Manager are here.
1.jpg
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by:bochaka
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Image 2 of 2
2.jpg
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by:nobus
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ok
since there are no unknown devices shown - nor an entry for modem or sound, i would check first in the bios if they are enabled

post results
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by:Davis McCarn
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There is no option to turn off the audio chip in that BIOS; but, HP is listing the wrong driver for the audio!  According to the specs ( http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01411631&tmp_task=prodinfoCategory&cc=uk&dlc=&lang=&lc=en&product=3716451 ), you have a 3D Sound Blaster Pro compatible sound 16 bit integrated and they are listing the Realtek driver (oops).
Try this one: http://drivers.softpedia.com/get/SOUND-CARD/OTHER-SOUNDCARDS/HP-Pavilion-tx1030ea-Audio-Driver-6015377-A.shtml
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by:bochaka
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I did install this driver, and indeed the latest version too but no luck. The motherboard had a conexant audio chipset on it. Also the bios and all other drivers are the latest ones from hp website.
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by:nobus
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are they enabled in the bios as asked?
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by:bochaka
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There is no option in the bios for audio devices etc. It appears to be a very basic bios, even the latest version.
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by:nobus
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and modem? nothing ?
test if the sound works if booted from a live knoppix cd then - and test the modem too
ftp://ftp.gwdg.de/pub/linux/knoppix/KNOPPIX_V6.7.0CD-2011-08-01-EN.iso    
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by:bochaka
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Ok. This will take about 30 mins, Back later, smokeemifugotem.
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by:bochaka
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This gets as far as Starting Hardware Detection And Configurtion (hwsetup)... and then it sits there doing nothing
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by:Merete
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I asked earlier if this was an upgrade  a clean reinstall or a repair reinstall.
This would greatly assist.
So on that I'll offer these suggestions.
If you performed an upgrade from XP there was some updates required before hand, also the upgrade had to match your XP version as in XP professional SP2 to Vista Professional sp2
If in the upgrade path the bios was out of date or some drivers  were out of date  or you didnt  / dont have sufficient ram the upgrade may have wrongly installed them or  they were not compatible.
compaq have an OEM upgrade disc that includes all the onboard correct drivers for your Compaq laptop / desktop it is called
 Express Upgrade kit
What is the HP Express Upgrade Kit and is it right for my PC?
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00758790#A0
Order Recovery Discs for Windows 7, Vista, or XP
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00810334&cc=us&dlc=en&document=&lc=en&product=3716451
Hope that assists a little.
Merete
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by:bochaka
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This was a clean install on a new hdd
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nobus earned 250 total points
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and what was the reason for the reinstall?  if it was missing sound, modem - they just may be bad.
>>  This gets as far as Starting Hardware Detection And Configurtion (hwsetup)... and then it sits there doing nothing   <<  are you referring to knoppix starting from CD ?  if yes - your hardware IS BAD
and no drivers will help
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by:nobus
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the only thing you can try - is another sound card, and modem
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by:Davis McCarn
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You may have bad hardware; but, before we throw in the towel, try this:
1) Go to Programs and Features to uninstall any of the audio drivers which did manage to get there.
2) Do Start and, in the search box, type CMD <CTRL-SHIFT-ENTER> which will open an elevated CMD.
3) In it type these:
set DEVMGR_SHOW_NONPRESENT_DEVICES=1
devmgmt.msc
4) In the Device Manager, click View -> Show Hidden Devices
(We now have a Device Manager with everything Windows has ever thought was there)
5) Go to the Sound section and expand it.
6) Right-click and uninstall everything but the Audio Codecs, Legacy, Mixer, Microsoft, and Video Codec entries.
(Reboot if necessary and repeat 3-6 until it is clean)

The purpose is to make sure there are no drivers which might be confusing the driver we want.

If you then reinstall the 3D Sound Blaster Pro drivers and still no joy, then there is a hardware problem.
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by:bochaka
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Hi
 The sound section is missing, it as as if it is off at bios level. but there is no option for audio in bios.
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by:nobus
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can you reset the bios?
Performing a hard reset   - - see  : http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01684768&tmp_track_link=ot_recdoc/c00372748/en_uk/c01684768/loc:3&cc=uk&dlc=en&lc=en&product=3716451
To perform a hard reset, follow the steps below.
Unplug the AC adapter from the notebook PC.
Remove the battery from the notebook battery compartment.
Remove the computer from any port replicator or docking station, disconnect cables to printers or devices such as external monitors, USB memory sticks or SD cards, headset or external speakers, mouse or auxiliary keyboard, turn off WIFI and Bluetooth wireless devices.
Press and hold down the power button for about 15 seconds to drain any residual electrical charge from the capacitors that protect the memory.
Insert the battery and plug the AC adapter back into the notebook PC; but do not connect any of the peripheral devices.
Press the power button to turn the notebook PC back on.
If prompted to boot into Safe Mode or select a special type of start up, use the arrow keys to highlight Start Windows Normally , and then press the enter key.
After reconnecting each of the peripheral devices, you should run Windows Update and HP Support Assistant to update all device drivers.
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by:Davis McCarn
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You did these?
2) Do Start and, in the search box, type CMD <CTRL-SHIFT-ENTER> which will open an elevated CMD.
3) In it type these:
set DEVMGR_SHOW_NONPRESENT_DEVICES=1
devmgmt.msc
4) In the Device Manager, click View -> Show Hidden Devices
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by:bochaka
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Yes, I did these. Ant the sound video game controller tab is still not there.
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by:nobus
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what about my post?  any comment?
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by:Davis McCarn
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Hmmm....
How much ram do you have in that laptop? 4GB is the limit on many chipsets and even that can cause a hardware conflict in that the top of the memory is used to map devices.
And, please post the P/N from the bottom of the unit.  It almost always ends in #ABA.
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by:bochaka
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Ram is 2gb , as far as I am aware this is the max for this unit, i tried 4 gb but it didnt work. Part number is KU153EA#ABU. Model c765em
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by:bochaka
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Hi Nobus.
Sorry I forgot to reply to you. Yes I tried this too. In fact I stripped it down to the bones removed and removed the cmos battery too, just to be sure it was all clear, hopefully removing any bios glitch, but nothing working at the moment.
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by:nobus
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since knoppix did not run (test the cd on another PC to be sure it is OK) i must conclude you have bad hardware
if the rest works OK  - you can try a separate sound card : http://www.nextag.com/laptop-sound-card/stores-html
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by:Davis McCarn
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We're running out of options here; but, what happens if you try to start the Windows Audio service?
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01763067&tmp_task=solveCategory&cc=ie&dlc=en&lang=en&lc=en&product=3716451
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by:bochaka
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This service is up and running.
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by:bochaka
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Going With the bad hardware diagnosis on this. Thanks Guys
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by:nobus
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sorry we could not repair it...
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