I am having trouble turning on my computer. I'll go to turn it on and the fans go real fast then it shuts off then it turns back on then shuts back off and this happens repeatedly, I have to unplug the computer to make it stop. What is wrong with this thing? Can somebody please give me some advice?To start with, re-seat video card (if you have one), and same for memory sticks (if you have more then one module, toggle them).Some thoughts on possible problem>>>

First see if your turn on button maybe stuck in, check for that. Also replug in any wires, for example take out the main psu cable and replug it back in, if you can check out the bios, reset it, make sure the bios battery hasn't died (its a watch silvery battery) buy a new one if its dead.
if you do have a bad switch see here>>


If it is the on/off switch the only COST around $20 bucks
Radio Shack should have them also, I believe there called a Uninversal Momentary Switch!

Or look here>>> http://www.frozencpu.com/ele-72.htmli don't think it from the cmos, but sure it's SOMEWHERE loose. re- connect everything and try to clean the pc.Make sure this is not an overheating problem, after you check vid card and ram RESEATING and Device Manager...Check your CPU temp and SYSBoard temp..If computer is running hot replace CPU fan and POSSIBLY Heatsink and DONT forget the thermal lube, Thermaltake is a good product.

Also, if you here faint clicks over and over corrasponding to the computer resetting, then your HDD or cable to you HDD is loose or bad or jumpers are wrong.