I was without internet connection for two days due to a strange problem. Windows Network Diagnostics was saying I was connected to the internet but both Google Chrome and IE were coming up blank. MY internet service provider did some remote testing the following day and could not find anything wrong on their end. I was actually able to update my anti-virus software at that time, which seems to indicate that my machine had access to the net but was somehow unable to browse. My computer ran without problems or slowdowns at all -- just the strange issue with the browsers. After deleting all my latest downloads, I went ahead and used Windows' System Restore service. That solved the problem. I've done several reboots over the course of the past 18 hours since and have not run into any problems at all with my browsers. Speedtest has consistently yielded normal results. My connection is running at the speed it's supposed to be running. I have noticed no slowing down anywhere. My PC isn't acting "goofy" and I haven't had any warnings from ESET. (I use ESET NOD 32 Anti-Virus 5, by the way.) I've run an ESET scan and CCleaner with my PC on safe mode. No registry errors. No warnings. I nonetheless suspect some type of malware was the culprit. I keep no sensitive files on this machine. I shopped on amazon and newegg with this PC about a month ago, but I never set it to "remember" any passwords. (Just to be sure, however, I've changed my passwords to the above sites using a secure PC at the office and alerted my bank and credit card services). For now, I would prefer not to reformat my PC as my OS is mounted on an SSD. Moreover, I'm a clueless noob so I really don't want to mess with something that seems to be working all right. I've read the 5-step malware removal sticky on this site. I'm thinking of running my system as it is for a few days to see if something out of the ordinary should pop up before I run any apps that would make changes to my system. But what should I be looking out for? What are the symptoms of a "compromised" system? Should I keep an eye out for any strange processes in task manager when I'm online? Because, inclined as I am not to do a reformat, I will do so if absolutely necessary. Thanks in advance for your advice.