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I recently purchased HP DV7tQE laptop (i7-2760QM CPU, 16Gb ram, 120 Gb SSD + 750 HDD, win7 x64). When I close the lid (or click Sleep in Start menu), sometimes it would turn off the display but backlight on keyboard would be still on, harddrive would make sounds etc - and there is no way I can put back to live. If I wait long enough (5-10 minutes) - it would eventually shut itself off - but then when I start it, it loads windows and displays "Windows was not shut down properly" screen. All my work is lost.

As I said, it does not happen all the time. If I restart Windows and put it into sleep - then it will work. However, if I work for some time, it might go to sleep properly, but more often than not, it will hang.

Any ideas? what should I look at?..

Thanks.

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Have you already updated to the latest available drivers? There should be a program named HP Update or similar which will enable the laptop to grab the latest from HP's support site and install it. – Darth Continent Dec 28 '12 at 16:18
    
Are you using the Windows installation that came with the laptop, or are you using a clean install? – Harsha K Dec 28 '12 at 21:51

I would look at your power settings first. If Hybrid Sleep is enabled, turn it off.

Start > type: 'powercfg.cpl' in search box > Change plan settings > Change advanced power settings > expand sleep > uncheck allow hybrid sleep and hit apply.

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