Windows 7: Windows crashing when opening folders

When I take certain folders in by drives, the windows crashes, I can't click anything etc.....

I use ctrl+shift+Esc to take task manager and take process there will be two explorer.exe and one will have CPU usage 99% .
When I end that process, the PC returns back and all those click I did also works.( Which usually opens a lot of MYComputers)

Some times I get a message "remote procedure ......" <attached> One or more times.....

It always happens in two folders which contains videos and sometimes in other folders too.

The videos are expendable but I can't even delete the folder.

Screen shot attached...

Tell If you need some processes list or something (and how?)



I am using Norton and Usb Security and Spybot.But is it still a virus attack???

I had posted this before but I didn't get an answer.....

Explorer crashes or the system crashes?

I think its the explorer.Can't move in the folder,Cannot use start menu icons,cand close open explorer windows but can use other applications properly(Some show a lag such as media players etc).Even can use interne explorer.

I just found this, hope it's help:
The remote procedure call failed and did not execute.

Regard,

Tuan

Thank you ttran but that didn't help fully.the error comes less often but the explorer freezes as the same.