I was having trouble with my new HP with vista. It would wake up on it's own
after putting it own sleep. I tried a few things I found on the internet and
nothing I found worked. So, I call HP. After an hour on the phone I get a
tech to help me trouble shoot it. The first thing he has me do is turn the
computer off, removed the cover, pull the ram cards and the battery out of
the mother board, clean them and put it back together. I get it back together
(he is no longer on the phone, disconnected?).
This doesn't fix my problem. I didn't feel like calling back and spending
another hour waiting to talk to someone. I tried the internet again and found
the solution. I'm sure there are a lot of people with this problem and I will
let HP know so maybe they will try this before they have take their computers
apart. Here is what fixed my problem.

Go to Control Panel
Device Manager
Network Adaptors
click on the first listed (NVIDIA....)


Go to the Power Management tab and uncheck - "Allow device to wake computer"


There is even a paragraph on that tab warning that allowing the device to
wake your computer may cause it to "wakeup" when you don't want it
to!!!!!!!!!!!!