Computer being hacked or hijacked?

[Fully]

I got this email a few weeks ago, you know when you open a file and go why did I open that for. The one were you see nothing going on.

I knew some thing was up yesderday when I went to open a programme and it opened up an emulator instead.

So I installed a new os on a new hard drive last night. Spent the morning changing my passwords.
Now pluged the drive back in for a look at the damage, changed all permissions to only allow me.

Stumped on this file, can any one help?
A file with the name of: AnalysisLog.sr0 opens windows shell

The file with the name: onlineRegData = xml file
There is info in here that is like wtf are you doing with this.
O/s name build serial,
My full isp accound details, - stumped how this was found out as its in my router.
All my passwords,
One of them is meant to be hidden.

Even with a good antivirus and defender doesnt seem to be enough these days.

Any advise how to combat stuff like this apart from the not opening dodgy emails ;P

 

[bradc]

AnalysisLog.sr0 is a securerom thingee for copy protected games, google it.

 

[Fully]

Yeah I know that, but Im not the owner, that I find strange.