Hello, I installed NOD32 antivirus 4.x for trial, and now I want to update to NOD32 5.x Actually I can't install NOD32 5.x because I'm told NOD32 4.x was not totally uninstalled. I followed this : http://kb.eset.com/esetkb/index?page=content&id=SOLN2289&viewlocale=fr_FR I attached the log of the result in my post. Then I tried this : http://kb.eset.com/esetkb/index?page=content&id=SOLN2616 But ehdrv.sys doesn't seems to exist anymore cause I was not able to find it. I have Windows 7 Ultimate x64, and I had NOD32 4.x I attached some files if it can help. Thanks you.