Shutdown/Sleep Issue.

Hi all, wondering if anyone can offer any thoughts or advice.
i'm running W10 from a W7 upgrade, and it's been pretty good so far. last night though i had an issue that occurred once before a month or so back.
basically, i went to shut down, and instead of the usual blue screen and "waiting for apps to close" type thing, the machine seemed to go into sleep; i could hear the fans running. i fired up, and on boot i had the issue i had the other month - i get the BIOS splash, the swirly dots, and then instead of the time/seaside cave i got a black screen w/ just a mouse pointer. i ended up having to hard reboot from the power button.

there's not much in the events, a bunch of 414s relating to media centre, but there are a couple that seem odd to a noob like me. this happened before i powered off and noticed the hang:
"The description for Event ID 56 from source Application Popup cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.
If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
ACPI
5
the message resource is present but the message is not found in the string/message table"
there's a few 7031 Events that Windows site says is apparently being investigated
and after the hard reboot i've got an Evetn 17 saying
"A corrected hardware error has occurred.
Component: PCI Express Root Port
Error Source: Advanced Error Reporting (PCI Express)
Busevice:Function: 0x0:0x1C:0x0
Vendor IDevice ID: 0x8086:0xA110
Class Code: 0x30400
The details view of this entry contains further information."
i've looked in device manager, no "!" markings etc.
aside from than, all seems ok, no dumps, BSODs etc.

TIA


EDIT:

just happened again, actually got the blue "waiting for 2 programs to close" etc, seemed to do that, powered down but the fans were running again. hard quit using the butting and powered up - came on fine, no "did not shut down cleanly" etc, more 414 Events and one 7026
"The following boot-start or system-start driver(s) did not load:
dam"

cheers

not sure when it started, w/ the noise of the fans powering down i never suspected the thing wasn't shutting off properly until i got these hiccups. no idea why that event says the machine's been up 2 years, i obviously haven't had W10 that long and the previous Win 7 never had these issues - and even if that were the case, the machine's one i built myself and it's not 2 years old! EDIT - lol, my maths sucks, i forgot to divide for hours as well as minutes!

haven't touched the vid drivers.
tried troubleshooting the power options, it said it had fixed some issues about a couple parameters being too long [sorry, can't recall].
had a look at power options and saw the power off button was set to "sleep" - changed it, but it hasn't made a diff.
have found something on other sites that seem to say the Fast Power Up option is the culprit, i'll try that next.