Because when graphics start having a issue its usually a overheating or video card problem not a virus. Viruses very rarely are built to screw up your graphics but not crash your PC.

You don't even know if the issues is with the game or his whole system. You don't know if other games or videos are doing the same. Calling out overheating is wayyy to soon before we even know major troubleshooting questions you should ask for this issue. Also if you have a virus that is eating up your memory (TONS of viruses do this nowa days) guess what well start to happen to your system?

Eitherway it takes 5 mins to check temps on PC. virus scanner takes much longer. And Also if it wasnt just EQ you figured she might mention something about it like "It also takes minutes for my browser to open" etc. If whole system is lagging in general do the following:

Install CCleaner and run it.
Google something called Rkill and run it(it stops known virus and malware from running).
Install Malwarebytes and run it.
Run whatever virus scanner you use in bootmode so it scans PC before you log into windows.
click start menu and in run bar type msconfig. Go to startup tab and disable the usual supspects from starting at windows startup(adobe,itunes,etc)

You might have to reboot a few times when installing the stuff just make sure you run the rkill then malwarebytes without rebooting so might have to install malwarebytes first cause i think it asks you to restart pc when done.

All good suggestions, let us know if any of this worked for you.

Temps looks like they're 46-55ºC

Says 43 processes, but I can only see 13 things in the list.

I noticed this way back in April, at least the spell lag. It would make it nearly impossible to keep my groups healed for hours at a time, then would miraculously end and not be an issue for a few days.

A friend was trying to show me LoL (game looks pretty boring), and there would be those lines originating from player units or spell effects.

Doing this now, thanks!

CCleaner installed stuff onto my browser I think.. some weird 24x7 Help thing. Uninstalling that.

ah yeah sorry forgot to tell you ccleaner has a install thing you just have to click no to when ask to install.

edit: 24/7help thing doesnt sound right though think it just asks if you want to install chrome.

CCleaner says it fixed some issues, but there are 100some still unfixed. I click to fix it and it opens browser wanting me to buy something :P

Malwarebytes now into C:\Windows\System32 (almost done I think) and has detected 14 objects.

do you have the demo for pro or something? should just downloaded the free version.

Downloaded from here: http://www.filehippo.com/download_ccleaner ?