It wasn't present in your systems according to FRST logs. Changing default password for router configuration should prevent future attacks and no additional action required. However, XP SP3 no longer receives security updates and PC2 is capable of running 7, 8.1 and 10 so you should consider installing them.
If there is no more adware popups:
• The following will implement some post-cleanup procedures:=> Please download
DelFix by
Xplode to your Desktop.]
Run the tool and check the following boxes below;
Remove disinfection tools
Create registry backup
Purge System Restore Click
Run button and wait a few seconds for the programme completes his work.
At this point all the tools we used here should be gone. Tool will create an report for you (C:\
DelFix.txt)
The tool will also record healthy state of registry and make a backup using ERUNT program in %windir%\ERUNT\DelFix
Tool deletes old system restore points and create a fresh system restore point after cleaning.