Sleep/Restart Problem

I installed Windows 7 Ultimate about two weeks ago and after a lot of googling through forums and stuff I've fixed pretty much all but three problems:

1) Whenever I try to restart my computer it will just hang at the screen that says 'logging off' until I manually pull the power cord out. I've tried waiting upwards of half an hour and it refuses to restart.


2) The same problem will sometimes happen when shutting down, but not nearly as often.


3) Whenever I put my laptop into sleep mode, it refuses to wake up, staring at me with a black screen.


I can tell you that I do have the latest graphics card and I'm pretty sure it's a problem with BIOS, but I'm just not sure how to change it. I followed the instructions here:


http://www.vistax64.com/tutori.....blems.html


in step 3. I know it's for vista, but a lot of people said it should work the same on 7 as well. Anyhow, It tells me that my computer doesn't support those sleep modes for S1 and S3. That's fine, because the next instruction is to enter BIOS power management mode to change this, but I have no clue how to get there because when I press F10 in the startup menu, there is no option for power management. Help?

Specs that you may need:
Windows 7 Ultimate (x64) (build 7600)
Hewlett-Packard HP Pavilion dv2700
NVIDIA GeForce 7150M / nForce 630M [Display adapter]
Board: Wistron 30D6 81.53
Bus Clock: 200 megahertz
BIOS: Hewlett-Packard F.27 11/27/2008

i tried this and it tells me that I do not have permission to disable hibernate mode, which doesn't make any sense to me because I AM logged on as the administrator.