The difficulty with troubleshooting problems with laptops is that hardware parts are almost impossible to swap out to test (in most cases). All I can offer is a few tips that I have found useful when dealing with these kind of problems in laptops:
> First, if your laptop is still under warranty, that is where you should start first. Also remember that Nvidia may have warranties on their component that is still in effect after the Lenovo warranty expire. Explore that possibility.
I wiped my hard drive and perfomed a clean install with Windows 7,8, 8.1 and 8.1 update still no change.
> Remember that when you nuke your hard drive and reinstall Windows, including different versions, it is extremely important that you also install the motherboard drivers for that version of Windows. Many people overlook this, and have resulting problems. Without those drivers, the machine defaults to the generic Windows drivers that may or may not work properly, or at least up to proper level of performance. If you are simply restoring the OS from a restore CD or restore partition on the hard drive then the drivers are included and there is no problem. However, if all you have is a restore partition, and you actually wiped the entire hard drive, that partition is gone so you must contact Lenovo for the drivers for your unit. You may be able to download them off Lenovo's website, we can hope for the best on that.
> I would have suggested a system restore attempt first, but if you have wiped your drive that is no longer an option.
> I assume that you have not been making regular HDD backups, especially image backups, so that is not an option.
> Here is some information on your lap and Nvidia card problem:
If I can think of any other suggestions I will post back.
Edited by ranchhand_, 17 March 2015 - 12:48 PM.