Why did my computer come on by its self?

[Perfect_Chaos]

i was sleeping and it woke me up as the graphics cards fans went full speed for a few seconds before it came back on

it was in sleep mode, but i find it a bit odd because i dont think my other computer did this when it went in sleep mode. are there any options to turn it off or anything?

almost **** myself because didnt know what was going on lol

 

[Perfect_Chaos]

i dont have anything on timer, i did get an email around about that time would that have done it?

that and i just got out of one of the worst sleep paralysis episodes i have had in a long time

i really dont think i want to go back to sleep now