My Hp Pavllion dv7 keyboard and touch pad will not work

Hi. My Hp Pavllion dv7 keyboard and touch pad will not work. Been going on for a few months now. Read in the support forum that replacing the battery might help however it hasnt. Ran updates for Windows Vista and Microsoft Security Ess. Boots up just fine however unable to place in my password to get to my user profile and always have to work from guest......unless I have a USB keyboard handly at the time. I use a USB wireless mouse as well.
Please help and thank you

The keyboard and mouse (touchpad) are separate devices which could go bad at the same time but that would be a huge coincidence. I would try reseating the ribbon cables to the motherboard for both. Here is the Service Manual:
Manual

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