So the reinstalling worked for me on the second time. So here is what you need to.
If you have legit windows, reinstall it with the same windows.
if you have a cracked one try reinstalling with a different windows (could be the same windows just another version or language)

Ive checked it and seems like its a problem with the WINDOWS itself. I mean i have another pc that has the same windows 7 from the same disk. and apperantly it has the same issue. the only thing i can do is to download a different version of the windows since that problematic one is a old Versioned one and i cant update him. I still dont know what realy caused this issue to other users

I am realy dissapointed about steam. guess what, an update. Wow they probably fixed this issue after full 5 weeks.Well i guess no. No change. I tried the update still not working. Reinstalled steam on different disks same error again. I guess there is still no solution by steam.

Thank you for contacting Steam Support,

You are receiving this message in response to the “Steam Client > Network/Connection Issue” ticket that you submitted.

We're sorry for the delay. We're currently experiencing much higher traffic than normal, and are asking anyone needing help to read the information below.

If you still need assistance, you *must* respond to this message after reviewing this information. Doing so will place you in queue for an expedited response. The information below is known to fix the majority of issues, and often times saves users a ticket.

If you no longer require assistance, you can ignore this message and your ticket will close automatically.

Please start by following the steps in the guide below now, even if you've tried them previously on your own.

Title: Troubleshooting Network Connectivity
Link: http://support.steampowered.com/kb_article.php?ref=1456-EUDN-2493

If this does not resolve your connection issue, please attach a diagnostic report for your system. We'll review this report for potential conflicts or issues, and provide you with an expedited response:

For a PC:
Title: How to run and submit MSINFO32 Info reports
URL: http://support.steampowered.com/kb_article.php?ref=1376-WTZN-9132

For a Mac:
Title: System Profiler Reports
Link: https://support.steampowered.com/kb_article.php?ref=4840-QWJX-0408

Thank you for your patience.

Sadly the only solution that was found is to reinstall windows or use another one if you can. so far i know that reinstalling windows is working. Valve could update steam so that they maybe will fix this issue. but we dont know how much time we need to wait for an update. we can make them fix this issue by letting them know alot of steam users get this error.