Steam simply will not start

[Refund]

My steam just wont start under any circumstances. I have tried literally EVERYTHING short of reformatting my comp.(which I'm trying to avoid). I have heard that virus scanners etc interfere, so I proceeded in uninstalling all of them, and still nothing. In fact now I can't get Mcfee back onto my comp. I have tried, reinstalling steam 7+ times and nothing. When I open task manager then click steam, steam.exe is their for 2 seconds top, then disappears. I went to steam support and they gave me some futile troublshooting tips, then I never heard from them again after that.

You guys have any ideas on what might be causing this?

Thanks,
Refund

 

[dunc453]

The same thing seems to be happening to me with Gmod, a steam app.
Know what ya mean about steam support, it is useless

Sorry no ideas short of re-format
I will have a think

 

[Agentscar]

(Only if you have steam installed)

Well,try ctrl+alt+del

and go to processes ,and you should see "Steam.exe *32" .Well,end that process.Then click steam,and try to start it up,should work.