Pc Failure, not booting

peter999

jackthenipper wrote: »

Hi Peter999, how did you get on with the diagnostic cards?

1) Finally tried the diagnostic cards, they didn't tell me anything.

The LED display should display a code that gives an idea of what's going on.
One card just showed dashes, the other just showed FF.

Don't think this is anything sensible, so don't think the boot is even starting.

2) Connected external speaker to see if any beeps, but still no POST beeps showing an error.
Made no further progress on solving the problem.

Am now taking another working Pc to test components from the faulty Pc.

peter999

gaming_guy

have you tried changing the case?

peter999

Carried out some further investigation on faulty Pc.

1) I have checked the Memory & Graphics card in another working Pc, they work ok.
Also now using Power Supply from working Pc to eliminate any power supply problem.

2) I have tried 3 different Socket A (socket 462) motherboards & 3 AMD Athlon XP processors to try to pin down whether motherboard or CPU is faulty.

-original motherboard & cpu
-2 motherboards & 2 cpus off ebay

I am getting nothing !!

Nothing is booting to pin down whether a Motherboard, a CPU, all motherboards and/or all CPUs are faulty !!!!!!!!!!!!!!!!!

I can't see I'm doing anything wrong.

Any ideas or suggestions, as it would be a bit unlucky for ALL 3 motherboards or ALL 3 CPUs to be faulty, giving same result of no boot at all (no boot message & no boot beeps).

peter999

peter999

gaming_guy wrote: »

have you tried changing the case?

Am using power supply in the case of another working Pc.

peter999

gaming_guy

have you tried simple things like clearing the bios settings?

are all the jumpers in the correct position?

peter999

gaming_guy wrote: »

have you tried simple things like clearing the bios settings?

are all the jumpers in the correct position?

Tried clearing BIOS on one of motherboards, no progress.

2 of motherboards are exactly same, so jumpers are all as per faulty M/B when it was working.
There aren't many jumpers to set, except Bus Speed.

I am testing motherboards out of case, just connecting power supply cable.
Pretty sure M/B's don't need earthing screws to run as when screwed into case.

peter999

aliEnRIK

peter999 wrote: »

Tried clearing BIOS on one of motherboards, no progress.

2 of motherboards are exactly same, so jumpers are all as per faulty M/B when it was working.
There aren't many jumpers to set, except Bus Speed.

I am testing motherboards out of case, just connecting power supply cable.
Pretty sure M/B's don't need earthing screws to run as when screwed into case.

peter999

I wouldnt be too sure about that

peter999

techiefred wrote: »

1) MoBos have standoffs they are usually brass ferrels that keep the MoBo up off the side panel so that the I/O ports on the back line up but they dont really have earthing screws as such as all screws are earthed.

2) 2 x CPU's from ebay (maybe damaged) CPU from Original PC may have become faulty from a spike/brownout or ESD, so its hard to find out whats going on when you dont have trustworthy components.

1) So motherboards should work ok out of case, I rest mine on bit of plastic, earth my hands regularly on earthed Pc case before handling.

2) I could say same about 3 motherboards I am trying !!

Items on ebay I bought were sold as tested, working or pulled from working Pc.
I know that may not be 100% reliable but generally items I have bought on ebay have been ok.

Maybe only way is to get some more CPUs & motherboards. :rotfl:

peter999

peter999

I've checked the Monitor works ok, the graphics card & memory work ok in another Pc.

I've bought 3x Socket A/462 motherboards & 3x AMD Athlon XP cpus off ebay.

I've tried all possible combinations to to try to find which if any motherboard/cpu is not working, but they all do the same, nothing appears on monitor, no boot, no POST error beeps, nothing !!

Nothing is booting, nothing is changing so I can't pin down whether it is Motherboard, CPU or something else !!!!!!

What could I be doing wrong, what else could it be ??

Something silly is going on, but I can't work it out.

old_codger1

jackthenipper wrote: »

Ye, i would definately check the speaker situation on the mobo or even add in an external to the rear of the mobo to check for beeps.

I haven't been following this and this may have already been pointed out but if you're talking about the speaker connector on the back of the motherboard...



... I'm pretty certain there's no way that will generate a beep for POST purposes. It runs from the on-board sound which requires a device driver so if you haven't even got a hard disk attached you can't have loaded a device driver.

Maybe you didn't mean that, though... if so, apologies

You need to connect up a working internal internal speaker to hear beep codes from a m/b but the cable can be run from another computer, obviously.