is my motherboard dead? My computer ..( a acer aspire m1641) doesnt boot up, says no input on monitor, and no beeps when all the ram is taken out. The only thing that happens when i hit the power button is the cpu fans,cd drives and (hd i think) turn on. So does this mean my mobo is dead? my Psu bad? or Cpu? I had a feeling it was my psu, so i checked it using a multimeter... it pumps out the rite Volts per pin... Im not sure abt the amps.
The ethernet port glows because it is powered by the little standby power supply inside the PSU. Did you check that pin?
Extracted from my troubleshooting suggestions:
use a DMM to measure the voltages. Measure between the colored wires and either chassis ground or the black wires. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire
(standby power supply): 5 volts always on. Tolerances are +/- 5% except
for the -12 volts which is +/- 10%.
On ther other hand, no beeps after you pull the RAM seems to indicate a bad motherboard or CPU. And CPU's are surprisingly durable.
I tested the psu according to this fficial&biw=1280&bih=629&tbm=isch&tbnid=K2UYcvSZewS9iM:&imgrefurl=http://flylib.com/books/en/220.127.116.11/1/&docid=jGizOdxWXmW8YM&w=352&h=475&ei=xrw-TuaCIamtsAKa8-z9Dw&zoom=1&iact=rc&dur=180&page=1&tbnh=185&tbnw=137&start=0&ndsp=19&ved=1t:429,r:5,s:0&tx=17&ty=89" rel="nofollow" target="_blank">http://www.google.ca/imgres?q=24-pin+ATX12V+2.x+power+s...... and it had the right volts per pin... so yea i think its my mobo.. hopefullly. but one question.. how does the cpu fan get power if the mobo is dead? the cpu fan gets its power trough the mobo...
Also i took off the heatsink and checked the cpu.. the thermal paste was very hard and dry.. but had a good coverage around it. also i tried the dumb way of checking the cpu, by checking if it heats up by turning the comp on for a couple of seconds.. No heat was felt by my fingers.. last question.. will the cpu get powered up if the mobo is dead?