Useless 8 screen or keep difficult 7 shell menu.

Hello experts,
The latest Windows 8 screen is different to what we used to know so I changed it to Win 7 menu but problems started after this. The online help I found in Google are all related to Windows 8 only. What should I do to fix this? All I wanted is a computer that doesn't have much crap on it. My computer will get every 10 seconds each day with half Win 8 and Win 7 looks which is not right since Windows 8 screen remains. It is still connecting to such craps on the background.
Please help me with this issue.
