Boot Problems with a new core i7 pcu, board, 1000w psu, ect.?

I have an evga mobo x58 sli , core i7 920 pcu , corsair 1000 w psu, 12 gig of ocz triple layer ram . segate 500 gig hd, and a hp dvd writer. I've had this setup for two months now worked fine till last monday then it died on me i can't get it to boot with the hardware connected this is what i can get it to do 1> install 1 stick of ram, vid card and mouse / keyborad, boots to bios. 2> thats it if i put any more ram on the board or install the hd/ dvd writer or any thing else it won't boot at all gets to code 50 or 52 witch is usb controller and memory controller depending on how much stuff i have pluged in im trying to rma the board but think it may be the psu i have heard that the psu has had issues with working for a month or two then die's . i do not have another core i7 compatable psu to test this with. i tried using a 750 watt from like 7 years ago but it doesn't provide enought juice to power up the board. im at a loss. ive also checked each stick of memory and they all work. i have also got the board to boot with all six sticks of ram on the board, but without the keyboard or mouse( when i plug in either one the board crashes) i really don't want to wait on a new board if its the psu can any one help me here . also i gave as much info as i could i can build my own computer and normally fix any problems i have but this one has me dumbfounded. thinking now i should have went with an amd board and pcu. plz help if i plug in my hd or dvd writer the board will not boot. again plz help using work computer to get any info i can get will check tomarrow.