"Only could be an MS update as I hadn't..... " Start again to factory settings. When the laptop boots to desktop then go to start, control panel and uninstall Norton. Uninstall any other bumf shown on desktop. Reboot and make sure W7 firewall running. Never click on any desktop icons on first boot-up with popular computer makers. Makes it difficult to remove integrated crap. Now you've removed the 'forced selling' bumf, illegal with door to door selling by the way, then install Microsoft security essentials until you work out what you need.
I haven't experienced the issue since I recovered the laptop (and since re-accepted the windows updates) but I'm now experiencing a slight flicker on the backlight. Not much just maybe up a notch and then down again in brightness as I scroll web pages, this is the only place I notice it.
I've got a £500 hp lemon laptop. Grrrr.
I've searched and it's apparently a common complaint with HP machines running off the battery.
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