Windows 7 - 1 iexplore.exe running in background without using IE

hi. I've this problem where the iexplore.exe runs at start up in hidden mode.

saw it among the processes and try to end task but after a few seconds a ntdll application appears and iexplore.exe runs again

i ran anti virus and anti malware. all cleared so i doubt it is a virus infection

the iexplore.exe had a microsoft corporation as its info

can anyone tell me how do i off this iexplore.exe as i'm need to do stress test on my computer

Then you are either infected,,, or have a start up app of some kind that is using it.
This is not normal behavior for any legit startup program.

I tend to sway to the side of infected.

What Anti Virus / Malware programs are you using?