Thanks for your answer.
1. I didn't do anything prior to these 3 programs
2. Before I run the 3 programs I had a 60 seconds countdown, telling me that my laptop was going to shut down. I shat down the laptop before the countdown was over. When I turned it on again, I followed the 8 steps. My antivirus indicated that the laptop was infected with Trojan Horse Hiloti.D; Generic 15. ACUX; SHeur2.BOHA but I think it's gone now. Now I don't have the countdown anymore but each time I turn the laptop on I get a message saying: "RUNDLL - Error loading C:\WINDOWS\akugahopiranohi.dll - The specified module could not be found."
3. I don't know. I have no technical knowledge.
4. I don't connect to the MSI site in Taiwan intentionally (but my laptop brand is MSI)