With repeated issues about updating, you have to wonder why Dell stopped supporting this model.
Compatibility isn't a hard and fast "it won' work" - most often you'll be faced with many different problems.
The "test" is to restore to the supported OS and see if the problems remain. If they do, it's likely a hardware problem.
If they don't, then it's likely an incompatibility problem.
The Synaptics device is an excellent example. When OEM's (like Dell) have stopped supporting an OS on a particular model - this does not mean that a particular device on that model is incompatible.
It then becomes your job to determine if you can find drivers for all of the devices that are compatible w/W10 (FWIW - that's one of the reasons that I started the Driver Reference Table here: http://www.carrona.org/dvrref.php )
You're able to update the Synaptics drivers to a version that's compatible w/W10
The problem comes as you eliminate all of these drivers - and you end up with a few that just don't have updates.
I'd continue to update the drivers as they come up - starting with the oldest one's in the memory dumps.
There are W10 compatible versions of the Intel Management Engine (MEI) - it's driver is HECIx64.sys and it dates from 2009 on your system.
The last one that I noticed was available from the Lenovo website for some of their models.
It's easier to find them there than it is at the Intel Download Center ( http://downloadcenter.intel.com )
Here's a search to get you started: https://www.google.com/search?q=intel+management+engine+windows+10&ie=utf-8&oe=utf-8
A quick story.....
I had a Lenovo x61t tablet that came with Vista on it. I updated it to W7 without issues, then tried updating it to W8 and had many different problems.
I took it to Microsoft (on one of my trips there) and had help from some of the finest minds available. But after several days of fussing with it we finally had to decide that it just wasn't compatible w/W8.
I reverted the computer to W7 and it's still working well at a friends house to this day.
Only you can decide when you've had enough - and then revert back to the original OS.