Computer wont stay running overnight

[SomKilla]

i left my computer running last night downloading 2 games though Steam, when i got up it was off, unexpected shutdown. This has been happening a lot and Ive been trying to fix it but not sure what causing it. i deleted all the logs before i walked away from computer before bed, no mini dump was created or in the LiveKernelReports\WATCHDOG folder. I'm lost on the cause and I'm not sure what i need to do.

 

[stormie1341]

is it overheating?
you might try watching the temps could be thermal shutdown which isnt good
u might try useinghwmonitor to keep an eye on your temps

 

[SomKilla]

is it overheating?
you might try watching the temps could be thermal shutdown which isnt good
u might try useinghwmonitor to keep an eye on your temps

no i dont think its overheating, i got 2 120mm front fans for intake, a side 240mm for intake, and 2 120mm top for exhaust and its a huge full tower case

hers the data from HWMoniter though

max temp is from play Crysis for an hour on Very High settings

 

[SomKilla]

im still get alot of unexpected shutdowns, and there isnt any logs being saved. No minidmp file, folder is empty. i posting an XML file of the event veiwer, there is alot of errors and critical events over the last few days. i really need some help with this, i cant figure out whats going on. i can play games all day with no shut downs, but i leave it at idle for a little bit and it does an unexpected shutdown