Important Services Have Stopped.

I am running Vista Home, 32 bit, with SP2.

I turned on my laptop, and there was no wireless internet. Turns out a lot of important services have stopped and I cant turn them on.

They include:

DHCP Client
Diagnostic Policy Service
IPsec Policy Agent
Network List Service
Network Location Awareness
Office Source Engine
Windows Firewall
Windows Time

I managed a workaround by defining an IP manually to my wireless card, and at least it connected to the internet, but DHCP is still stopped. So is the Diagnostic service, so the "repair button" wont work either.

When I go to services and try to start them, I get the error, "Access is denied", or "The dependency service or group failed to start".

My Network sharing centre is saying the same thing. Firewall is also disabled, error is "Security centre cant turn on windows firewall"...