no post!

M

Maverick986

Weaksauce
Joined
Jul 9, 2007
Messages
119
Ok here’s what happened......I'm writing an email when my pc locks up.....I hit the reset button and then it goes to a black screen like usual but never comes back from it.....so I hit reset again and then after walking away for a few mins it comes to the post screen and tells me that there is no keyboard connected....but there is..I try unplugging the keyboard and then plugging it back in and nothing....so I reset it again and goes back to just blank screens....I check to make sure that everything is connected right and it all is so I decide to reset bios....still black screens.....I turn it off and leave it for a while and try again and still nothing....I then turn it on a check the diagnostic led's I have hooked up to the mobo and then looked up what the led light config is in the mobo manual......it says "Initializing Floppy Drive Controller, This will initialize Floppy Drive and controller" the only problem is that I don't have a fdd hooked up.....so I hook one up....nothing still.....I try switching out vga's thinking its a vid card problem.....nothing.....I put the original back in....nothing.....needless to say I have run out of ideas and looking for all of yours.....please help!!!!!

system specs:
mobo: MSI K8N Neo 4 v.1
cpu: AMD Athlon 64 4000+
gpu: nVidia 6200 256mb
hdd: 500Gb: 2x 250Gb WD raid 0
mem: 2x1Gb GSkill ddr400
 
no i don't.....nothing shows up on my monitor......its just a blank screen.....the hdd light comes on and flickers for a bit so i assume its booting or at least checking for the hdds but i don't get anything on the monitor so my only assumption is that its not posting.....
 
This does sound like a PSU problem but it could be other things too!
Best eliminate the basics first.
Can you try another PSU?
 
It would help to know what PSU you plugged in.
If its not powerful enough it might do the same thing.

Try unplugging everything you dont need from the PSU so you have only a very basic setup to get into windows.
If this works, either something you have unplugged is faulty or the PSU cant handle everything at once (most likely due to a fault not because the PSU isnt rated for your setup)
 
The psu i plugged in was the old stock one that came with the case.....it says on the side...Turbolink Model: LC-A420 ATX......I unhooked everything but the cpu hsf...cd drive...and hdds......still the blank screen.....i tried this with both psu's.......the Turbolink ran the pc for almost 3 yrs b4 i decided to upgrade to a bigger psu since i was putting in a new sound card and planned on upgrading the gpu......also the one I have in now has been running the system fine for about 3-3 1/2 mo.........
 
It looks like something is poorly for sure.

Any chance you can try a USB keyboard in case the one you have is faulty.

I'd take it apart, look for possible short circuits (ie a motherboard post in the wrong place or a metal object).
Clean it up and put back together.
We can then at least eliminate straightforward bad connections and external short circuits.
 
the keyboard is usb....and the little lights on it for capslock and what not light up now..i don't think its a keyboard thing any more since noting shows up on my monitor at all.........i've checked for a short somewhere and havn't seen any....
 
Sorry, silly to assume it was a PS2 keyboard.
Does it still do the same without the keyboard plugged in?
 
i tried unplugging the keyboard.......but still the same nothing is showing up on the monitors.....they stay black as if the pc isn't even turned on......
 
can you hear the PC booting?

If not, try taking the PC apart and cleaning it as mentioned in post #10

Beyond that, plug a PC loudspeaker onto the motherboard and listen for beeps, you may get some more information from that.

Try using one memory stick in different slots.
try each stick/slot in case a pair has become damaged.

Borrow parts from a friend and find which have failed.
 
it sounds as though the hdds boot up......but they've always been whisper quiet.......i took things out and cleaned and used one memory stick...then both in multiple slots...then switched between slots....and still nothing..even tried the old memory i had in.......i rehooked up my buzzer/speaker and still sounds the same as always....just beeps very slightly longer than i remember it doing in the past.....the diagnostic led's still show the code for the fdd thing i mentioned in the first post.....ohh also when i put the pairs of sticks into different slots when the buzzer was hooked up it would beep for a 'sec' on and off 3 times then stopped...all the less the monitors still stay in standby as if though i never turned on the pc at all..my old memory is OCZ value ram ddr400 2x512........
 
The error code appearing is independent of the device it says has an error.
Therefore I suspect the motherboard has a fault.

Its doubtful it is booting as the error code would have cleared but I wanted to make sure.
I am pretty sure its hanging at the point the error is found.

Sadly the only way to test is either replace everything else (to see that it is still dead) or replace the motherboard.
 
You could test the PSU. Jump start it (on the main atx connector, short the green wire with any black wire, using a paperclip), and see if it stays on. If not, then its a faulty PSU. If it works then proceed... it really sounds like a board issue.

Setup everything outside of the case, with the mobo on top of its cardboard box. Plug in only the essentials:
- PSU
- CPU w/ HSF
- Single stick of ram
- Videocard if there is no onboard video
- Monitor
- Keyboard
- Use a screwdriver if your board doesnt have an onboard power switch
- System speaker/buzzer

Jump the two power switch leads to turn the power on. If it won't post, try different RAM slots. If it won't post, pull out the ram (so no ram in the system) and listen for error beeps. If none, pull the vidcard and listen for error beeps. If none, re-seat the CPU/HSF and try again.
 
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