Okay, bit of a strange issue. Just posting for some advice about possible solutions as it is starting to get a tad annoying.
When I turn my pc on, my main monitor (1) will turn on just fine, however my second monitor (labelled 3 in windows) won't wake up unless I turn on my television (labelled 2 in windows). If I turn my TV off afterwards, my two monitors work just fine on their own.
If the PC falls asleep and I wiggle the mouse to wake up (and the TV is off), neither monitors will wake up until I turn the TV on.
Really strange issue and I'm not entirely sure what's causing it, any advice will be much appreciated!
EDIT: might be worth noting, my second monitor (NOT THE TV) is connected using a DisplayPort to HDMI Adapter!