Errors on msn 81000378

I tried to do almost everything and i cannot fix this problem on my laptop.
When i sign in, this error appears... I did the troubleshooting steps on the
help support page and nothing works out.
(http://messenger-support.spaces.live...3F!12965.entry)

I did the step 2b and appears more problems:
- The module "wintrust.dll" was loaded but the call to DllRegisterServer
failed with error code 0x80070005

- The module "initpki.dll" failed to load. Make sure the binary is stored at
the specified path or debug it to check for problems with the binary or
dependent .DLL files

- The Module "Cryptdlg.dll" was loaded but the call to DllRegisterServer
Failed with error code 0x80004005

- The module "Gpkcsp.dll" failed to load. Make sure the binary is stored at
the specified path or debug it to check for problems with the binary or
dependent .DLL files

- The module "Slbcsp.dll" failed to load. Make sure the binary is stored at
the specified path or debug it to check for problems with the binary or
dependent .DLL files

-the module "Slbcsp.dll" failed to load. Make sure the binary is stored at
the specified path or debug it to check for problems with the binary or
dependent .DLL files

- The module "Sccbase.dll" failed to load. Make sure the binary is stored at
the specified path or debug it to check for problems with the binary or
dependent .DLL files

Please can anybody help me?? I'm getting crazy