The one wierd thing about it is that when you reset the cmos while the computer is on the copmputer usually restarts.
You're not supposed to clear the CMOS with the computer on.....
You made sure to plug in the computer speaker right? The one that allows the computer to simply BEEP! Although I believe Intel boards generally come with this speaker already attached to the motherboard.
Sounds like something isn't seated right, or if everything is seated right then the motherboards grounding out, RAM is bad, or CPU is bad. When there's a hardware problem power will go to your computer but it'll simply not boot up and it's not showing anything to the monitor not because of the monitor or video card but rather because the system can't work properly. To troubleshoot it to find if there is defective hardware you must completely remove the motherboard, put it on something non conductive like a lot of cardboard, then put in ONE RAM stick, Vid card, your CPU, and Keyboard and see what the computer does. Mainly you want to hear a beep because that'll tell you what's wrong and where. When you have your mobo out like I said, you then simply remove each piece one at a time until you find the problem. Once you remove something and the computer beeps or POSTS then you know that part is faulty