Processor: Intel Core 2 Quad CPU Q8200 @2.33GHz 2.34GHz
Company of Computer: Lenovo
I reformatted my computer to try to make it faster. I did this by booting it up from the vista cd that came with the computer, and then formatting the disk and installing the OS again from the disk. It took about a day to install all my programs again, and do windows update. After it was all installed, I noticed that firefox was freezing and crashing very frequently, especially when I was viewing Youtube videos. So I switched to chrome. Even with chrome, I experience lag, but it did not crash nearly as often as it did with firefox. I would experience an issue where neither firefox or chrome could lode webpages. My internet was fine because my smartphone was able to use the Internet, but the browsers kept showing that it could not connect to the website. It wouldn't even connect to sites such as google, facebook, and youtube. This problem fixed itself in about 4 minutes, but it has happened several times today. Overall, my computer has been slower than from before I reformatted it. It takes a while for vlc player to start a video, and it often lags when going to fullscreen. Looking through folders will lag. Mostly my usual daily computer activities are significantly slower. I ran checkdisk, but it was fine. I also ran sfc/scannow, and it said it had repaired some files. I also got an error message from windows saying that my version of flash was not compatible with this version of windows. So I uninstalled and reinstalled flash. The same flash I had before, and the one I had is for vista...
A little while after that, Norton 360 found a trojan(look at picture). But I did a full system scan yesterday, with no items detected. And about an hour before the trojan was detected, I scanned with malwarebytes, and it found nothing.
And just now, Norton 360 gave me an error(look at picture)
If you need any more information, please ask.
Any suggestions are appreciated!