Posted 05 August 2007 - 02:58 PM
This is terribly long, and I apologize in advance.
After the May Windows update was installed, my computer became very slow. It does not seem to be the update scan problem noted by Microsoft and corrected by updating MSI. I say this because at present, the CPU usage with no apps running except Task Manager is as low as 2-3%. However, when I run Firefox, it can take between 30 seconds and 3 1/2 minutes to launch. As I write this, Firefox is using 93% CPU. My Eudora 7 email client can take as much as 2 minutes to launch, using high CPU. Windows Media Player won't play video, and often chops up audio as well.
A new disk was installed in February, 2007 following a disk crash. All software was installed at that time. Everything ran fine until May 24, when I had to shut down to install additional memory. I gave Windows update permission to install an update it was holding. When I restarted the computer, the trouble began. (I have since run memtest86+ at the suggestion of DaveM59 at BC - it passed. I also ran defrag. It made no difference.)
Initially, Windows Defender was running at 100%. After I disabled it, the computer became usable, though very slow.
I happened to run IE, which I seldom use, and found it unusable. 1) It would not display graphics, only a frame with a small X in the corner, and 2) It would follow no links. That's when I suspected malware.
BTW, I run NOD32 antivirus continuously, and Adaware SE and Spybot Search & Destroy weekly.
I went through all the preliminary steps to submit an HJT log except for an online virus check, which would not work. One of those steps wipes out system restore points, unfortunately. I submitted a HJT log and an Autoruns log to BC. DaveM59 determined that there is no malware.
Since then, I did a Windows reinstall, which I understand doesn't really replace everything. IE now works, but everthing else remains the same. I can't watch video on Windows Media Player. Sometimes it won't even handle audio MP3s. Eudora is extremely slow to echo when I type. I literally can't do two things at once. When my PVR's guide server is getting program updates from the web, I can't use a browser. When my antivirus scans files, it uses 100% CPU. Most programs are slow to shut down. Windows Update wants to install a new installer, but it can't because of a goofy permissions problem that I haven't dealt with yet. All the time I have been typing this, Firefox has been running at 95% CPU. Anyone got any ideas, or should I just reformat and start over (sob!).