Getting errors, intermittent internet access, & lost administrator privileges

It's also running extremely slow. I'm having these problems with my desktop PC running Windows XP (so this is a different problem from my previous thread about my laptop). I tried posting this a few days ago, but that thread seems to be gone.

With the administrator privileges, I'm the only one who uses this computer, so there should be no reason for me to lose them.

Whenever I boot up the PC, I get a Microsoft Error message that says something to the effect that some software I had previously been using had errors, but they weren't reported at the time, so it asks me if I want to report it now. Never any mention of what software had the errors or what they were.

Also, when I try to log on to the internet, Explorer and Firefox usually shows an error message that says it can't connect to the web page. I've resorted to booting up the PC with the F8 key depressed so I can select the last configuration that worked every time. That usually lets me connect to the internet, but even then it doesn't last. After maybe 20 minutes, if I try to connect to a different page on the web site I'm on, or if I try to switch to another site, I'll get that same error message again.

I ran the "Read and Run me first", and tried to follow the instructions exactly, but there were some problems. Some of the instructions didn't match what I saw on screen. (I printed the instructions out, but the screenshots didn't print).

Anyway, here's what went wrong: When I ran HitMan Pro, I didn't see any option to "Ignore" the results of the scan, so I thought maybe it was defaulted to ignore or that it might be on the next window. So I clicked "next" and it went ahead and deleted and quarantined stuff.

I also didn't see any "Save Log" link, so I again thought it might be on the next window, but when I clicked next, the log went away without saving and there was no way to go back. So I wrote down what it said under "History" hoping that might be enough to help you. Here is what was under History:
{9AFB8248-617F-460d-9366-D1CDEDA31793}\HKLM\SOFTWARE\Classes\CLSID\ Deleted
brrot-uninst.exe Riskware Quarantined
YontooIE Client.dll Malware Quarantined
C:\Program Files\Yontoo\
If you need me to run HitMan Pro again, please let me know.

When I ran Malwarebytes, there was a problem, too. The instructions said to close the Notepad log report (it didn't say anything about saving it first) and look for it in the hard drive, but I could only find old reports there (I have used Malwarebytes before). I even did a search and could not find the newest report. So all I could think to do was run the scan again so it would generate another report that I could save manually.

The last time I tried to post the reports, the MGlog.zip would not upload. I guess I have a lot of stuff on my hard drive so it was huge. I had to unzip it and upload it in smaller chunks. I had managed to upload everything except the zafind.txt file which is 66.8 MB. I tried zipping it by itself, and it was 10.4 MB and still wouldn't upload. The only error message was "Upload failed". So if you have any suggestions on how I can get it to upload, I would appreciate it.

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I didn't have problems with Rogue Killer. I'll try to post those logs now. I had to reboot before I posted any logs because the computer started acting crazy.
When I would select several files with the control key, I found I couldn't de-select, even when I clicked an empty area in the folder. When I selected another file (without modifier keys) it added that file to the other selections. This has happened before, and it is usually accompanied by random captalizations and any window that had been minimized won't maximize again when I click in the taskbar.
Anyway, I'll try posting most of the logs below and try the last one with Firefox.

Most of the logs wouldn't post because it said I had already posted them in the thread that never showed up. I thought maybe that thread was deleted because I had typed the HitMan Pro history in it. I had done a search for my screen name, and that thread didn't show up. Actually, this thread didn't show up, either, but when I tried to post it a third time (without the Hitman history), this thread did show up as a similar thread with your response.
Is there a way to make the system forget about my previous attempts to post the logs? Or can you somehow retrieve the logs from my previous attempts?
I still have to try re-posting that one stubborn zafind.zip from the MGlogs in Firefox. I'll do that next.

 

I just tried to post the zafind.zip and I got an error message saying it couldn't be processed because a security token was missing. That's the same error I got when I tried with Explorer.
Should I keep trying other browsers?

 

I just had an idea, maybe if I rename the zip and log files (add a 1 to the end), maybe the system will let me post them. If this works, that means the only file I'll be missing is the zafind.zip.
It didn't work; the system knew they were the same files.

 

Thanks. I'm sorry, I guess I was over-posting without knowing it. Do you know why my threads didn't show up when I searched for my screen name? Is there a better way to find my threads that I'm not seeing?

Anyway, I'll try to post the JRT log below.