This really is a Lenovo issue probably related to their battery/power management. Check
with Lenovo and Intel Support.
Intel - Support - Community and Forums
http://intelopenport.hosted.jivesoftware.com/community/tech
You "might" get some assistance at Microsoft Support direct.
Call Microsoft Customer Service direct - 1-800-642-7676 - hours 5 AM
til 9 PM PST time (USA) - Saturday and Sunday, 6:00 AM – 3:00 PM
PST time (USA). In Canada, call (877)568-2495.
Contact Microsoft Customer Service
http://support.microsoft.com/kb/295539
Microsoft Support - Contact Us
http://support.microsoft.com/contactus/?ws=support#tab0
Microsoft - Phone Numbers for Microsoft Technical Support
http://support.microsoft.com/kb/319726/en-us
Microsoft - Contact Us by Email
http://support.microsoft.com/contactus/cu_sc_selector_email?ws=support%2csupport
Windows 8.1 Solution Center - there are options and a "Get live help"
http://support.microsoft.com/find-solutions/windows/windows-8-1/
Windows 8 Solution Center - there are options and a "Get live help"
http://support.microsoft.com/gp/windows-8
Microsoft Solution Centers - Select Product
http://support.microsoft.com/select/?target=hub
Hope this helps.
Rob Brown - Microsoft MVP <- profile - Windows Expert - Consumer : Bicycle <- Mark Twain said it right!