If you want to use a 90 or 60 day trial version of Norton 360, you can download it from the links given below
Norton 360 90 days OEM
Code:
http://buy-download.norton.com/akdlm/dm/estore/downloads/OEM/N360/5.0/N360_5.0.0.125_MS_LOEM_MRF1441_5671.exe?LNG=EN&None&fileExt=.exe
60 days OEM
Code:
http://buy-download.norton.com/downloads/OEM/N360/5.0/N360_5.0.0.125_SYMTB_TMD_LOEM_MRFTT_226_5621.exe
Btw, if you are sure that Eset works fine, just disable security center. I have disabled many services on my PC including the Security Center