Q: My computer has been running very slow since two weeks ago and I had to reboot it almost every time I used it. I have tried disk cleanup, update Windows, delete temp files etc. I’m not sure if it has been virus infected what steps should I do to fix it? A: There are many factors which can cause a steep or a gradual decrease in your computer performance: A Virus infection Conflicting software programs that loads at the startup Multiple security programs Recently installed software updates or drivers Third-party browser plug-ins Cluttered files over years A lot of items loading at the startup To identify why your computer is running slow you must first determine when it occurs. You may experience slow performance while browsing the web, starting up the computer, running a specific program, or a slow-responding browser. Below steps may improve your computer’s performance: Update latest Anti-Virus program and Full system scan Install Tune-Up program to remove invalid program and temporary data from computer Update latest software from official Website (Mac / Windows) Answered by Nigel Ng, HKT atHome IT Consultant Experience: 10+ years of experience in Information Technology, with solid experience in Technical Advisory, General Troubleshooting for devices running major operating platform and Network Diagnosis.