Virus does not let me open AVG, Hijackthis,

Hello,

I ran a scan on my computer with avg. it said it some components were missing so I figured I had a virus of some sort. then, it found and healed all virus except 3. when I went to go back and see the virus vault and results. it didn't show them anymore but my computer began to slow down.

now, I am unable to open avg. or any type of virus software. My AVG was showing a critical error so I went to the free.avg and re downloaded it. But it completely stopped downloading. So I don't have any anti-virus program on my computer.

I tried downloading it again to no avail. I also tried. malwarebytes and downloaded the iexplorer.exe file. when I opened it, it opened for like a second then it crashed. I tried to reopen it but it told me I may not permission to open it. on my task manager there is there is a process that is called 1570276229:2054973346.exe, I have never seen it.

I just need help. I have usually been able to remove any virus but this one has me on lock. PLEASE HELP.