Confused after attacks

Your logs do not show any malware issues. I have a few things below for you to do but they are not malware issues nor should they have anything to do with your problem.
Do both PC's connect via wireless? If not, how do each of them connect?
Are you sure you do not have any kind of scans, defrags, ....etc set to run at this time of day on the PC in question.
When the problem, occurs, do you see anything out of the ordinary in your process list? What about CPU usage at the time (is anything using a lot of CPU time)?

Uninstall the Sunbelt CounterSpy trial since we are finished with it now! Then delete the below two folders which may be left behind by the uninstall:
C:\Documents and Settings\Andy\Local Settings\Application Data\Sunbelt Software
C:\Documents and Settings\All Users\Application Data\Sunbelt Software(2)
C:\Documents and Settings\All Users\Application Data\Sunbelt Software
C:\Program Files\Sunbelt Software(2)
C:\Program Files\Sunbelt Software

Uninstall the below old versions of software:
J2SE Runtime Environment 5.0 Update 10
Make sure you reboot after uninstalling the above!

Run HijackThis and select the following lines but DO NOT CLICK FIX until you exit all browser sessions including the one you are reading in right now:
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe"
O20 - Winlogon Notify: WRNotifier - C:\WINDOWS\SYSTEM32\WRLogonNTF.dll

After clicking Fix, exit HJT.
Now reboot in normal mode

Now attach the below new logs and tell me how the above steps went.

1. ShowNew
2. HJT

Make sure you tell me how things are working now!

 

Your logs are clean. If you are not having any other malware problems, it is time to do our final steps:

1. If we used Pocket Killbox during your cleanup, do the below
   • Run Pocket Killbox and select File, Cleanup, Delete All Backups
2. If we used ComboFix, you can delete the ComboFix.exe file, C:\ComboFix folder, C:\QooBox folder, and the C:\combofix.txt log that was created.
3. If we user SDFix you can delete all the SDFix related files and folders from your Desktop or whereever you installed it.
4. If we used VundoFix, you can delete the VundoFix.exe file and the C:\VundoFix Backups folder and C:\vundofix.txt log that was created.
5. If we had your run FixWareOut, you can delete the Fixwareout.exe file and the C:\fixwareout folder.
6. If we had you run Avenger, you can delete all files related to Avenger now.
7. If we had you download any registry patches like fixme.reg or fixWLK.reg (or any others), you can delete these files now.
8. You can delete the ShowNew.Zip and GetRunkey.Zip files and the files that you extracted from the ZIP files. You can also delete the C:\newfiles.txt and C:\runkeys.txt logs that were created
9. If you are running Windows XP or Windows ME, do the below:
   • go back to step 8 of the READ & RUN ME to Disable System Restore which will flush your Restore Points.
   • Then reboot and Enable System Restore to create a new clean Restore Point.
10. After doing the above, you should work thru the below link:
    • How to Protect yourself from malware!