http://192.168.2.20/blogs/doverton/archive/2007/03/12/the-hybrid-sleep-feature-and-the-hibernation-feature-in-windows-vista-may-become-unavailable-after-you-use-the-disk-cleanup-tool.aspx[updated 12th March 2007 21:03] This particular problem went round the internal discussions groups - having told people how to turn on hibernation and suggested a KB article on it, Armelle O'Neal told me that is has already been written up in KB ArticleenCommunityServer 2008.5 SP2 (Build: 40407.4157)http://192.168.2.20/blogs/doverton/archive/2007/03/12/the-hybrid-sleep-feature-and-the-hibernation-feature-in-windows-vista-may-become-unavailable-after-you-use-the-disk-cleanup-tool.aspx#2948Sun, 18 Feb 2007 16:31:17 GMT72050d9c-4f41-4a16-9f70-ebbf2c98a2c7:2948David Overton<p>open up device manager (do a search on the start menu if unsure how to do this) and find your network adapter - right click on it and select properties. &nbsp;My network adapter has a power tab - look at the options here - this may well be where your answer lies. &nbsp;Also check the bios settings.</p> <p>ttfn</p> <p>David</p> <div style="clear:both;"></div><img src="http://192.168.2.20/aggbug.aspx?PostID=2948" width="1" height="1">http://192.168.2.20/blogs/doverton/archive/2007/03/12/the-hybrid-sleep-feature-and-the-hibernation-feature-in-windows-vista-may-become-unavailable-after-you-use-the-disk-cleanup-tool.aspx#2944Sun, 18 Feb 2007 15:32:42 GMT72050d9c-4f41-4a16-9f70-ebbf2c98a2c7:2944Vijay Singh Riyait<p>I really like the Sleep feature in Vista as you get such a fast startup on my laptop. However, if I have the network cable plugged in then the laptop can 'wake' up by itself. If it's just on the wireless, then it doesn't as the wireless network connection is shutdown during Sleep mode. I'm assuming the network activity is awakening the laptop? I'm not really sure?</p><div style="clear:both;"></div><img src="http://192.168.2.20/aggbug.aspx?PostID=2944" width="1" height="1">