MOBO LED on, no PSU fan, no boot

ninpo

Hi I am a noob,

I recently purchased a second hand asus a7n266_vm mobo + CPU + DDRRAM for my kids to play with & promptly inserted it into an existing case.
- Initially was getting POST error BEEP beep BEEP beep … (Continuous).
- I assumed the ram was incorrectly seated, & reseated it. Same POST error,
- tried changing banks, no difference.
- Tried removing the RAM, no difference.
- Tried reseating the CPU Fan (which was not original).
- Then got peaved, unplugged all & reconnected.

Then things got worse, MOBO LED on, no PSU fan, no boot
- So connected the Green & black pins of the PSU, fan starts no problem, so assuming PSU OK.
- Reseated the Mother board, nuthin
- Reseated the power cables, nuthin
- Shorted the ATX power switch pins on the mobo panel with a spare jumper, nuthin,nuthin, nuthin

I’m not exactly sure what I’ve done wrong, I was suspecting that the previous owner of the board may have over clocked the CPU, hence the new super dooper Titan 12 V Fan… maybe something else is configured wrong???
Maybe I shorted the board on the case when I reseated the panel connectors (No spacers on that corner of the board...though I thought I had switched it off) … who knows…?
So My question is am I wasting my time trying to recover from this? And What do I do about the shoe on the wall?

Really appreciate any assistance
Cheers

edcentric

You did reset the BIOS didn't you?
You are sure that the memory is seated, and that it works? Can you pop it into another machine to test it?
Is the video card seated too? Some AGP slots require an extream amount of seating force.

Are you sure that all of the mounting standoffs in the case lined up with the mobo? You could have something shorted. Why don't you take it out of the case to work on it.

Medlock

Did you try reseating the cpu?

ninpo

Thankyou for your replies, much appreciated...

edcentric:
:o , I assumed by removing the on board battery that it would have cleared the
BIOS, upon actually reading the manual I found I had to short a pair of pins as well.

If I were getting the original beep code I'd be a happier man, currently I'm booting completely bare bones, just the ATX power switch on the panel shorted with a spare jumper, system speaker for beep codes and atx power connector to mobo, no cards, no ram, no drives, no luck. I am doing this with the mobo removed from the case in case ther board was shorting due to a phantom screw or something... but thanks

TheGR81: Thanks ,haven't tried that yet, I suppose after being in transit & my incesent wiggling of stuff it could have shaken loose... will let you know.

Thanks again
ninpo

flyrice

IIRC, removing the onboard battery only clears CMOS, not the BIOS.

Boogle

Are you trying it with the CPU in also? If with only the CPU and RAM in you get a repeating code, I would assume that the RAM is either unseated or bad. From what I've seen, it will give the same or an error similar to the former with the RAM completely removed.

If you can it could really save you some trouble if you try your RAM in another machine. If you can't test it yourself, you might consider finding a local computer shop with someone that might be able to test it for you (Just remember, they might not be trusted as they stand to make money if it's broken).

Sometimes boards are a pain in the ass to seat the RAM correctly, you might try more pressure, just don't break the board of course.

TheLostSwede

ninpo,

The error beeps...is it long,short,long,short ets? The manual should tell what those beepcodes mean.

http://www.pchell.com/hardware/beepcodes.shtml

That's a good source for reading beepcodes depending which type of bios you have.

mikechinym

i think maybe it is the power supply unit. because when mbo got lights, it don't mean the psu is ok. it is better try the psu on other motherboard.