G700 locks up after about an hour

I bought the G700 a couple months ago. Windows 8 was installed already. After I did the update to 8.1 I began to have issues immediately. First off, I lost the use of many of my desktop apps...many of the Lenevo ones. Even though it is very irritating I can live with that, but the thing that is bugging me so much is how my laptop will just freeze up and I have to do a hard boot. Sometimes I have to do the restore feature. Usually the laptop will freeze up in about an hour, and sometimes less.
The only device I have installed is the wireless Logitec M325 mouse. I thought at first that perhaps this was the issue. I uninstalled it and used only the touchpad. This made no difference at all.
I want to install Win 7 on here but at least for a few months that is not going to happen. So in the meantime...any suggestions would be SO very much appreciated!
CrimsonFire

hi CrimsonFire1959,
Welcome to Lenovo Community Forums!
It might have been some Application / Services and or Programs that got affected by the update.
You can try performing a clean boot in the meanwhile and check if the performance will be back to what it was before.
http://support.microsoft.com/kb/929135
Regards
Solid Cruver
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Hi,
For Windows 8.1 freezes, have we checked this KB article?
Windows 8.1, Windows 8 or Windows 7 hangs or freezes
For the dism repair, please refer this KB article, if we have an install disk available:
Fix Windows corruption errors by using the DISM or System Update Readiness tool
DISM.exe /Online /Cleanup-image /Restorehealth
Important When you run this command, DISM uses Windows Update to provide the files that are required to fix corruptions. However, if your Windows Update client is already broken, use a running Windows installation as the repair source, or
use a Windows side-by-side folder from a network share or from a removable media, such as the Windows DVD, as the source of the files. To do this, run the following command instead:
DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:C:\RepairSource\Windows /LimitAccess
Note Replace the C:\RepairSource\Windows placeholder with the location of your repair source. For more information about using the DISM tool to repair Windows, reference
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Best regards
Michael Shao
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Hey Doug,
Thanks for your post, and welcome to the Apple Support Communities.
I understand that your keyboard backlight is not working upon startup, the following may resolve your issue:
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
After performing normal troubleshooting, these symptoms may indicate that an SMC reset may be necessary:
Lights
The keyboard backlight appears to behave incorrectly (on Mac computers that have this feature).
You may also want to reset your computer's PRAM:
OS X Mountain Lion: Reset your computer’s PRAM
http://support.apple.com/kb/PH11243
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