So over the past a few days i have been experiencing this random reboot problem it never happens while im gaming and no it's not because it's overheating once again im fine if i game for 10 hours but if im idle or sometimes surfing maybe watching videos on youtube boom it reboots without BSOD and my settings already set to don't automatically restart in my settings i get no BSOD it just restarts..so i decided to format my pc reinstalled everything but catalyst..without catalyst computer never rebooted no matter how idle i was or surfing. as soon as i installed catalyst boom laptop randomly reboots again. then i decided to only install the display driver and not the catalyst audio or other things that come with catalyst software and now its fine..but i am wondering why does it cause my laptop to randomly reboot? i have alienware m15x i7 740qm i have amd mobility hd 6990m 2gb and 4gb ram running on win 7 64 bit. thank you for your help!