Moving screen causing USB root hub/ports to disconnect.

Hello everybody, I'm a newbie to this website specifically for this query.

My Netbook: Acer Aspire One 120GB HDD, 1GB RAM, Intel Atom, OS: Win7 Starter (One year old).

Every time I now adjust the physical position of my netbooks screen e.g. when I lay down or sit up straight, I straight away get the beeping sound indicating hardware changes, and then a bubble appears informing me that this device can perform faster...
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Intel R 82801-G (ICH7 Family) USB2 Enhanced Host Controller - 27CC USB Root Hub Ports X 8

Status quote: This device is working properley.

I have tried uninstalling and reinstalling the device, and also tried updating the driver software in device manager though
none of these have solved the problem and i'm now starting to get the notorious blue screen because of this issue.
Is there anything else I can try to sort it out, or am I likely looking at a general hardware problem.

Best Regards - Jamie