Whats going on 'ere then?

Hi All,

New to the forum - have a tech issue with Windows 7 whereby the whole PC appears to freeze for 3-5 seconds and all applications hang. I've captured the event in "Resource Monitor" and the CPU usage, and %age Frequency drop to zero, as does disk and network activity - just like everything has stopped.

I;d really like some guidance on how to try and figure out what's causing this issue.

Anyone here clever enough to help?