Hp 6735s none of my usb ports are working - HP Pavilion dv5000t Notebook

The answer that I found does not work.

Please make sure that usb drivers are installed properly in the system.
To check, please perform the following steps.
To open device manager perform following steps:
Click Start, click run and type devmgmt.msc and press Enter.
or

Click Start , enter device in the search field and select Device Manager from the list The Device Manage window opens.

Now, once you are in the device manager, check it there is a yellow exclamation mark on Universal Serial Bus Controllers. If it is not expanded then expand and see if it has any exclamation mark.
If you find this yellow mark, then you may have to reinstall the drivers. USB drivers for the notebook are part of the chipset. If necessary, the USB drivers required by the notebook can be reinstalled from Application recovery.
If you do not see Universal Serial Bus Controllers. Then check in BIOS if computer is able to detect it. To check in BIOS, please perform following steps:
Restart the computer and when the first screen displays press F10 repeatedly until the setup screen displays.
Use the Left Arrow and Right Arrow keys to select the Advanced tab. Now use the Up andDown Arrow keys to select Legacy USB Support .
Press Enter , select Enabled , and then press Enter . Press F10 to save settings and exit.
For further details, please go through the following link. This link has complete USB troubleshooting details.
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=3687621&prodTypeId=321957&prodSeriesId=3687621&objectID=c00820529#c00820529_DeviceDetected

and
http://h20000.www2.hp.com/bizsupport/TechSupport/SupportTaskIndex.jsp?lang=en&cc=us&taskId=110&prodSeriesId=3687621&prodTypeId=321957&supportTaskId=22884

Please speak to hp customer care department if this issue is not resolved or there is some kind of replacement, if this is under warranty.
http://h20000.www2.hp.com/bizsupport/TechSupport/ContactHP.jsp?lang=en&cc=us&prodSeriesId=3687621&prodTypeId=321957
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Thank :)