Issues w/ a game+power plan..I think X_x

[Guest xDiamond]

Ok. I play MapleStory. And I always AFK on it and leave it running. And, I

never had issues til recently. I goto bed or whatever. And, I come back. My

screen is black. And I move my mouse and my game is frozen. And I gotta

reboot. I change my power plan so it never shuts my monitor off(I'm using a

desktop PC) but somehow the power plan resets? And it's set at 20mins again

X_x It's quite annoying. Any solution for this? I tried finding one. I'm not

even entirely sure what the issue is. T_T Any help would be nice. I'm using

Vista Home Premium and a HP Pav desktop. Thanks in advance.