I have this big problem in my Windows 7 computer (formerly having Windows Vista ). Few days ago, I began to feel tired about the loud fan noise this PC is producing, even when minimizing the programs. I decide to get SpeedFan, but temperature readings prove that the computer's too hot to reduce fan noise. After asking a question to reduce fan noisy on another forum, one response suggests dust cleaning and hardware upgrading, particularly the chips and the fans.
I decide to do dust cleaning only. For like the first time since over 4 years, I cleaned this dusty HP computer. It's all over the venting and the interior. I got all of the exterior and much of the interior free of dust.
I reassembled and resumed using my computer afterwards. The PC doesn't produce loud noise anymore, and I haven't heard an increase in noise, even when running the bigger programs.
In the next day (which is yesterday), I was using the computer in the morning until when the computer started to do something a virus would do. I was going to listen to music in YouTube, but I realize the sound is not working at all. I checked my speaker cord, which is already plugged well even after my reassembling. So I decide to double click on the sound icon, but the icon won't be highlighted, and nothing opens. It turns out that my taskbar buttons can't work anymore in this session. I even tried to run programs, from my internet browser to Google Earth, and none got to load successfully (Google Earth's starting image just hangs). The computer's internet ability gets disabled as well. After a period of time, my sound icon is changed to have the mute icon, and said "The Audio Service is not running". I realize my computer is working less and stops programs more. The only program I can run without failure is Windows Explorer. I can't logoff/shutdown automatically as well.
The problem starts to happen about 40 minutes after logging in. It doesn't happen during Safe Mode, however. The sound does work only before the first "symptoms" of the problem.
I ran a scan with Microsoft Security Essentials. It handled all threats it detects, but the problem I had still occurs.
So, my possible culprits are my dust cleanup (possible slight damage to the components), SpeedFan, or some virus I can't detect. I need to find an answer to this serious message-less threat on my computer.
Mod Edit: Moved topic from Windows 7 to a more appropriate forum. ~bloopie
Edited by bloopie, 17 March 2013 - 04:05 PM.