yes b4 dissasembly, remove or disconnect everything not need to get the pc to POST, not boot. If you have 2 sticks of ram, insert one at a time. Make sure to unplug your pc when making changes. You may also want to clear the cmos. I would also google memtest86. It is a bootable free prog to test your ram. You can get a bootable diskette creator or an iso for a cd. Also could be your power supply, check your bios settings to see what you are trying to boot.