One thing that comes to mind is that your Lenovo is an older computer, yet still modern-era as it was made in 2009. However, 8 years is a long time, especially if it has the original BIOS in it built for W7. There are many issues with things like sleep mode, hibernate, and suspend that require BIOS updates to make that 8 year old hardware more compatible with a new OS such as W10 (July 29, 2015). Interestingly enough, visiting the Lenovo support site and popping in your model, there is a very recent BIOS update dated 6-03-2015 as here:
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Here's the link to the page:
Link Removed
I would backup
EVERYTHING on your hard drive to external media (2 types) if you haven't already done so. You should do a folder/file backup with something like
AOEMI BACKUPPER, or
W10 FILE EXPLORER, as if you've never done a BIOS upgrade yourself, you should know it's
EXTREMELY HIGH RISK!! If you do this and it fails, it's very likely to brick your Motherboard, and that's a repair that could cost from $400-$1,500.
You could spend weeks, months, or years trying to track down a problem that's hardware based, and no settings you could come up with will ever fix that problem on 8 year old HW with W10.
If you're leary of doing the BIOS upgrade yourself, best to pay a licensed Tech to do for you, and simply try the computer again after the upgrade and if it fixes the problem, then you are good to go!
Let us know how you get on.
<<<BIGBEARJEDI>>> 