So a few days ago my laptop got infected with a Java Trojan, My Comodo antivirus detcted it and removed it, since my malaware bytes,and avast didn't detect anything. So Once I scanned,detected,and disinfected it,everything started to work,fine, Until 2 days later, Its started freezing, and going slow again,and making a weird noise, which was from the trojan but had already removed it, so I scanned everything again and nothing was found, which was weird. But on my other account on the laptop, its works okay, (the guest account), but on mine it doesn't? What should I do, and what is causing this?