So about a year ago i disassembled my computer and put it away, i remember reformatting my hard drive before i put it away and now as Christmas break is coming up i dug it out as a quick project for me to rebuild. so i reassembled everything and got it to turn on. now it starts up and goes through memory testing and everything checks out ok and then it gives me the memory information ddr 400 and then the trouble starts when it try's to detect the ide drives it seems to just freeze and the key board does not work, i have tried skipping the memory test and it freezes could anyone help me out as to whats wrong? im new to this so keep it simple please also when i start it up it says the ram is 128mb but on the side of the ram card in my computer it says 512 so an explanation for that would be nice and also another thing i noticed was the cd drive is not working, dvd works find and the floppy disk drive has a constantly lit up like regardless of whether or not anything is inside of it and i have tried different ribbon cables.