<--Specs I cleared cmos so settings are all at stock. I can not get my computer to boot if I have a ram stick in the 3rd or 4th slot. Those are the two slots on the right side out of four slots. By not boot I mean that the computer turns on (fans lights etc) but I get no beeps and it shortly turns off without me being able to even enter the bios. It will turn on again repeating this over and over. I can have upto the two left slots populated giving me 4gb of single channel ram. This setup will let me get into windows etc. It does not matter which of my four sticks are in which slots. I have let the computer run for awhile hoping that the motherboard wills somehow find itself a fix. I also have cleared cmos repeatedly with the button and also by removing the battery. I have tried no other fixes beyond this. I did just do two things that could possibly of caused this. One, I just took apart my watercooling loop and installed an apogee drive II. Two, while my loop was apart I tried cleaning off excess soldering flux and residue from motherboard as I was curious as to if it would actually help with my overclock. I did get sticky surfaces and cleaned them with a toothbrush, 99% alcohol, and a coffee filter. I did this to my soundcard, gpu, and motherboard. Gpu and soundcard are having no problems at this time. As always, any help is appreciated.