I have never built a computer before. So I am green at this and would appreciate some help. I will list my components: Gigabyte GA-EP45-UD3P MB, Intel E8500 processor,Zalman CNPS9700 cooler,Corsair CMPSU-650TX power supply,OCZ Reaper HPC4GB.memory,PNY-NVIDIA 9400GT video card,3 Seagate 160 GB SATA hard drives,Sony DRU-810A CD/DVD drive and a floppy drive. I put it all in an Antec 900 case. I have downloaded memtest86. First it says to clear the CMOS by following the manual. My GIGABYTE manual seems to say not to, unless you have instability.I went into the boot menu and set the computer to boot from the CD drive first. Then I went into MB Intelligent Tweaker and set the Ram timing to 5-5-5-18 and voltage to 2.1. I put in the memtest cd and and tried booting. It brought up a screen with a choice of 3 memtests . I tried 1 which was 3.5. It seems to recognize the memory and try to do something but it will reboot after about 5 seconds. I don't know what to do at this point.