Can't DL CoD after paying or log in to Steam

[gprr]

Hello all

First time Steam user here
Yesterday, after paying and getting conffirmation code,DLed the steam msi thingy and installed it in "Steam games" folder under "C", stating 10mb connection that I have.
Got back to the opend window of my CoD purchase and pressed the DL botton and got this from Steam:
"Could not connect to Steam network.
This could be due to problem with your internet connection, or with the Steam network"
Created support account and submitted my problem with no reply yet.
I can login to my support account with no prob but can not login to Steam via my descktop installed steam app' or Steam site with same error message as above.
When trying to change password, allwaye getting the specified code to my e-mail but after creating the password in two boxes and proceiding, getting same error note.
Dissabled firewall and Avast antivirus but it changed nothing.
Uninstalled/installed Steam while changing connection state from 10 to 2 mb but no change.
WIN7 64bit

Thanks fo helping
GP