Hi,
There is a switch in front along the left edge on some models. Be sure that it is lighted blue and not amber.
What is the exact part number for your DV9000. It's on the bottom on the HP sticker.
If you go into Device Manager and look under Network Adapters you might see a wireless adapter. My DV9000t shows an Intel wireless adapter but yours might be different.
Your laptop might have a virus. Do you have a set of the HP recovery disks?
HP ENVY 6055, HP Deskjet 1112
HP Envy 17", i7-8550u,16GB, 512GB NVMe, 4K screen, Windows 10 x64
Custom PC - Z390, i7-9700K, 32GB, dual 512 GB NVMe, dual 512 SSDs, 4K screen, OC'd to 5 Ghz, NVIDIA 2080TI 11GB