Ram Related Boot Issues

[V-I-N-C-E]

Hi it just got back my PSU from RMA all parts seem fine.

 

But i can no longer boot with the 2 ram sticks in Dimm slots 2/4,

but it boots fine in 1/3 will that affect it at all? 

 

cpu-z says its running 8gb at 800mhz dual channel like normal.

i remember hearing that its best to to use 2/4 for some reason, so that's how it was set up from day one worked fine for 2 years now just will not boot when 2/4 is occupied.

 

i have tested each ram stick in slot one both boot fine runs xmp fine.

only other thing to mention is that i had to put the intel stock cooler on because i corroded my d14 heat-sink with water while trying to clean off dust who knew d15 on the way.

Thanks For Any Help

 

lol solved it was the stock cooler was too tight so it must have been pulling on the slots

 

Specs

Windows 7 Home Premium 64bit

ASUS DRW-24D3ST 24x DVD Writer

Thermaltake Level 10 GT Case

MSI Z87-GD65 Gaming Motherboard

Corsair CMP8GX3M2A1600C9 8GB (2x4GB) DDR3

Intel Core i5 4670K

Noctua NH-D14 CPU Cooler

EVGA GeForce GTX 770 Classified ACX 4GB

Samsung 840 EVO Series 250GB SSD

Toshiba DT01ACA200 2TB 7200RPM

Samsung HD240UI OLD PART

Corsair AX860 Platinum Power Supply