So I sent the ticket to steam support and they replied giving me instructions that might help, here:
Hello, Thank you for contacting Steam Support. The following instructions describe how to temporarily disable applications running in the background which can cause conflicts with Steam. These instructions are for temporary, diagnostic use only and your system should not be left in this state. Please try this: Click the Start button, then "Run" (or Windows key + R) Type in: msconfig Uncheck the box labeled "Load Startup Items". Now, click on the "Services" tab. Please make sure the "Hide All Microsoft Services" box *is* checked. Then, click "Disable All". If you are using Vista or Windows 7, please re-check the "Steam Client Service" as this is required for Steam to function on these operating systems. Click "OK" and allow your computer to restart Test the issue and let us know the results. This is for diagnostic purposes only. You should not leave your computer in this state, but it may help us determine the cause of the issue. To set the system back to normal, launch msconfig again and choose "normal startup", close the window and restart your computer.
But that didn't works, sooo I did as they said and replied and explained what happened, here:
I did every thing you described and restated my PC, and when I clicked to
play "Portal" it said that it was unable to connect to steam because the
internet was off and I couldn't find my own network, it then gave me the
option to "play anyway" or "cancel" I clicked play anyway and it did
nothing. So I returned to normal mode.
Thanks
And now I'm awaiting their next reply... just wanted to keep you guys updated on whats happening, didn't want to keep you in the dark when I wouldn't have gotten this far without your suggestions.