popup virus, occasional freezes.

[LepaJ]

Today i have suddenly got popup messages when i start the computer. I ran several scans in safe mode with avg, malwarebytes anti-malware, advanced systemcare. Now my computer boosted up fast as usually but now i got 2 popups instead of one. What could be the problem and what should i do?
Popup messages are simple. Named fjkg, text inside is kggfkg and you can press x or ok. Second one is named aghtah, sahaha

 

[HFC]

What OS do you have? This might help isolate the problem, but instructions are for Windows up through 7.

Open Task Manager. When you get the pop-up(s), leave it/them open and look at Applications. Find the listed item that corresponds to the pop-up window(s). Right click on that and select "Go To Process." Google the .exe that it brings you. If you don't find suggestions, post the process name here and see if someone recognizes it.