Having problems with your HP Pavilion dv9720us Notebook ?

Unknown device thank you very much for your solution ,I hope receive more solutions from you,I still have unknown device,device instance id is( ACPIHPQ00072&DABA3FF&0) location on microsoft ACPI compliant system(code28) ,and I have another unknown device it called ethernet controller ,device instance id is(PCIVEN-10DE&DEV-054C&SUBSYS-30CF103C&REV-A23&2411E6FE&0&50),location PCI bus 0,device 10,function 0 (code28), and the (OHCI compliant IEEE 1349 host controller)cannot start,I must tell you


Answers :

I beleive that you had downgraded and installed a retail version of XP by erasing the preinstalled version of Vista in your Notebook.\015\012
\015\012However, all the drivers required for your Notebook may not be available with HP if your Notebook is preinstalled with Windows Vista.\015\012
I recommend you to try downloading and installing the drivers for HP Quick Launch Buttons from the link below for the first Unknown device in the Device Manager :\015\012
\015\012ftp://ftp.hp.com/pub/softpaq/sp38001-38500/sp38266.exe
\015\012
\015\012Save the file on to the Desktop or My Documents folder and double click once the download is completed to install the drivers.\015\012
\015\012For the Ethernet Controller, I recommend you to download the LAN Card Drivers from the link below :\015\012
\015\012ftp://210.51.181.211/cn/nic/INSTALL_VISTA_6208_0922.zip
\015\012
\015\012Coming to IEEE 1394 controller, you need to download and install the Chipset Drivers which are available through the link below :\015\012
\015\012http://us.download.nvidia.com/Windows/nForce/15.24/15.24_nforce_winxp32_international_whql.exe
\015\012
\015\012Make sure that you download and save the files in the Notebook and double click them once the download is completed and restart the Notebook after installing each of the drivers provided above.\015\012
\015\012Hope this helps...\015\012
\015\012
\015\012
\015\012
Repair Help & Product Troubleshooting for HP Pavilion dv9720us Notebook

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Unknown device thank you very much for your solution ,I hope receive more solutions from you,I still have unknown device,device instance id is( ACPIHPQ00072&DABA3FF&0) location on microsoft ACPI compliant system(code28) ,and I have another unknown device it called ethernet controller ,device instance id is(PCIVEN-10DE&DEV-054C&SUBSYS-30CF103C&REV-A23&2411E6FE&0&50),location PCI bus 0,device 10,function 0 (code28), and the (OHCI compliant IEEE 1349 host controller)cannot start,I must tell you


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