Did you remove/uninstall any and all anti-virus products BEFORE attempting the upgrade? If not, do so, including Microsoft Security Essentials, and any 3rd party firewalls.
It is not a driver problem. I do not know if uninstalling TrendMicro now will fix your problem, but give it a try.
Windows 10 has all the drivers you need for your board. And, for sake of discussion, even it it is "drivers", which one?
After you remove TM, make sure WIndows Defender is on.
If you google for the exception answer is always driver. Windows 10 upgrade would complain if AV was a problem. I did upgrade almost 30 Dells with Trendmicro AV installed OK.
Drivers for board, graphics and network. Any help would be appreciated.
I have installed Windows 10, via both upgrade and fresh install, on a couple of 5 Series Desktop Boards (KG and SO), and I did not encounter any issues doing so. I too forgot to remove my AV (McAfee) software, but this did not cause any issues (and McAfee upgraded itself automatically afterwards) -- but, it is important to understand that these systems had add-in NVIDIA and ATI graphics cards and did not utilize the Intel HD Graphics engine. Intel does not support Windows 10 on either 1st or 2nd generation Core processors and does not provide a Windows 10 driver for this engine. The only driver that supports this engine is Microsoft's compatibility driver and this driver has *many* issues - so many that Microsoft withdrew support for it (if you contact them regarding a problem, they will usually just ignore you).
Bottom line, if you are using the intel HD Graphics engine on these boards, this is very likely the cause of your issues. The answer is to use an add-in card. The issue is that this path is also fraught with compatibility issues. Don't purchase the latest and greatest card, it won't work. You will have to look back a number of generations for something that is compatible. My guidance is don't attempt to use anything that is three years newer than your board. I used an NVIDIA GTX 750 Ti board in my tests. I have heard of third-party board with same graphics engine NOT working; I believe that this is because of issues with their Video BIOS.
Hope this helps,