I've recently been getting annoyed by the noise my PC makes, specifically the 2 HDDs. It's the high pitch whirring noise of the 7200rpm spindle spinning constantly. It's very noticable when my room has gone completly quiet. I see the power options to shut off hdds after 10mins, i could hear the difference straight away, the whirring noise has near enough gone. Is there anything wrong with doing this as my second 'storage' drive only warms up when i need to access it rarely say when just using Word and hdds have gone to sleep in background until i save or something. remember they goto sleep after x minutes of idle time so if i'm surfing and C: drive is occasional in use with the IE cache, it stays alive. it makes more immediate difference then anything else i've tried b4.