Today i upgraded to Windows 10. Everything has been great so far, but when I open Steam the only tab I can open is Library. All other tabs are not loading. Also when I try to open the other tabs (Store, Community) my CPU usage goes very high.
Please try the following.
1. End your Steam process.
2. Go to your Steam.exe location.
3. Right click Steam.exe and go to properties.
4. Got to the compatibility tab which you can click at the top.
5. Uncheck "Run this program as Administrator."
6. Apply and Okay.
7. Run Steam.
There is clearly differences in administrator rights in the different versions of Windows. This isn't just the fault of Steam, Windows is clearly to blame as well. Windows 10 has caused me MANY problems not just this. Steam should be able to figure out a fix for this as well, so they are also to blame.