I originally posted this under motherboards catagory, but i'm looking for more input. 2 weeks ago i built my computer with no problems at all. a couple days ago, it locked up. when i tried to reboot it, my monitor, keyboard, and mouse wouldn't work. upon opening the case, i noticed my dram and cpu red leds were lit up on my sabertooth X58. I tried clearing the cmos, using only 1 stick of ram, and resetting my cpu. Nothing has changed. Any suggestions on what i should try? My origianal guess is the cpu died, but i'm not sure that that would cause everything else not to work.
It is doubtful that the CPU is bad, they are the most reliable component in the computer. Saying that they can be destroyed if incorrectly mounted with the heat-sink or no heat-sink compound applied, but you would have seen very high temperatures and would have experienced freezes after using it for a while.
The most unreliable component (apart from the computer builder) is the power supply I suggest that you start there.
the manual isn't very helpful about the leds except for the obvious. here it is, verbatim;
"POST state LEDs check key components (CPU, DRAM, VGA card, and HDD) in sequence during motherboard booting process. If an error is found, the LED next to the error device will continue lighting until the problem is solved."
UPDATE: this morning i tried the purple, gray, and blue power supply wires. everything there looks good too. I think i've tried all of your suggestions so far. Thanks for all the input. my mobo and CPU are still under the 30 day warranty, so i'm going to try to RMA them and see what happens. i would RMA the ram too, but for whatever stupid reason, i threw away that packaging... Thanks again, everyone
with all the voltages checking out alright, i thought i had eliminated the PSU. Is there anything else i should check on it? thanks for the information about the memory, i'll try that next if this doesn't work.
The best bet is to try a known good PSU, even though the =3.3, +5 and +12 V checked ok with the Multimeter. You could check the currents to the 3 listed voltages, BUT that is very diff to do as the meter leads would have to go in series or use a current probe, nie onto imposible without breaking out wires.
Next you could try replacing one stick of Ram (not using your orignal ram). Also disconnect all HDDs/DVD drives to see if you can boot to bios. This then leaves the CPU, MB, GPU.
One comment on CPU/MB. If you did not use good ESD precautions you may have damaged the CPU/MB - that is created what is called a "Walking Wounded" component. This is much more prevalent durning the winter monthes when Relative humidity is often 30% or less.
Need to get the chart on relationship to RH, But the ability to generate a static charge is greatly increased at RH < 30%