ive been looking at someones pc which whenever connected to broadband hundreds of windows open & programs start to run with no user input..formatted hdd fdisked mbr no good..works ok on my connection but soon as its plugged into there line all goes wrong..tried rootkit detectors..latest antvirus etc..any ideas anyone..im stumped

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The described symptoms indicate malware/spyware infection.

Try the measures outlined here; Cleaning Out Malware
http://www.techhelpforum.com/showthread.php?t=5808
If this doesn't help, or (other) issues remain which cannot be resolved through these measures,,,,,,

Unfortunately at this time, this site has a shortage of HJT log analysts so please go to our sister-site;
Follow the instructions here-> HiJackThis prerequisites. There are important measures outlined here which affect and "optimize" the outcome of your HJT log.

Then post your log in a new thread in the Spyware, Adware, Viruses and HijackThis Logs Forum.

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