on/off cycle

Im having a continues problem with my ram One of my ram sticks causes my computer to turn on and off repeatedly and the other ram sitck only works in slot 4 i've had this issue for the third time now and was ble to fix it by removing the CMOS battry and restaring my bios but this time it hasn't...

I recently just completed my very first build and it worked perfectly for two days! However on the third day I went to turn on my new build and it didnt provide power to the keyboard (which usually lights up) and the monitor stayed black. The computer then turned itself off and then back on...