Member Avatar for sana319

hello eveery one
i have a problum last when i working on my computer it was ok i shut down it , next day when i start my computer i don't start post. but it aslo gave me no beaf or any other information , i chang my cpu. then change power suppy ,vga every thing .but it is same , now somebody tell me that ur pc bios is erased . soo plz help me what i do now next.
sana

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Dani AI

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Following the troubleshooting already shown in this thread (comments from and ), a structured, minimal-hardware approach will isolate the fault faster than swapping many parts at once. Start with a careful visual and connector check: look for swollen or leaking capacitors, burn marks, bent CPU-socket pins, loose front‑panel wires, mis-set jumpers, or a motherboard standoff shorting the PCB. Confirm the board is laid on a nonconductive surface when out of the case.

A focused bench test is the next diagnostic step. Power the board outside the case with the smallest set of components needed to POST — CPU and cooler, one known-good memory module in the primary slot, the video adapter only if required for that board, the main and CPU power plugs, and a system speaker attached to the header. Observe fan motion, front-panel LEDs, and any beep pattern. If no activity appears, use a simple POST card or a multimeter to check PSU rails (+12V, +5V, +3.3V) and confirm steady voltages. If a beep code appears, compare it to the BIOS vendor’s code table.

If the bench test still fails, swap only one part at a time with a known-good item (memory first, then PSU, then video) so the failing component can be identified. If none of those produce POST activity and voltages are correct, the motherboard or CPU is likely faulty. Repair shops can bench-test with spare parts and a POST card if available.

As requested, post precise hardware identifiers when asking for further help: exact motherboard model, BIOS label, CPU model, RAM type/speed, PSU model and any observed LEDs/beep patterns. Photographs of the motherboard (showing caps and jumpers) and results from a POST card or PSU voltage readings greatly shorten diagnosis.

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Member Avatar for Catweazle

If you've made all those hardware changes, then you will probably need to reset the CMOS memory, which would reset all settings to default values, before the system will boot.

Power down, disconnect the power cord, open it up and remove the CMOS battery. Wait at least a few minutes before replacing it and seeing if the system will boot.

If you've replaced the cpu with one which is unsupported by the system BIOS, you will need to put the older cpu back in, and perhaps even update the BIOS to allow the system to recognise the new cpu

Member Avatar for sana319

hello u mean that first my mother board is ok. i only remove the cell , and replace it with a new one.. plz

Member Avatar for Catweazle

No, I mean pull the battery out, wait a bit, put the battery back in.

That should clear the CMOS settings and set them back to factory default values. It gives you a 'starting point' for trying to get things working.

While you're in there, check that all cables and connectors are firmly in place, and that all cards etc are firmly in their slots.

Member Avatar for sana319

i remove the cell . put it again in ,replace it with a new one too. but it don't display
. i also change the agp , repace a vga too. but there is no beaf and no display. i alsoo change the power supply too.
what i doo next plz

Member Avatar for Catweazle

Some technical details next please?

Make and model of motherboard, make and model of processor, what type of RAM are you using?

We need to know what the components are that you're working with if we are going to be able to help.

Member Avatar for sana319

this computer i using from last year ,it is ok and ok. but when i install win xp on it it gave an option of upgrade of bios version. i don't upgrade and continue with that i insstall the xp . i us xp up to 6 month ...

Member Avatar for Catweazle

A quick question:

Did you turn it off and disconnect the power cord from it before you started changing all those parts? If you didn't, you've possibly blown it up! there's still power inside even when you've 'Shut Down' if the power cord is still plugged in.

Beyond that, we need some technical details please. Names, numbers.........

Member Avatar for sana319

every thing is it is not blown ....i have shut down it before takeing iny changes.
the specification are

the processor is intel 450 mmx single edge contact .
mother b. intel chap pci ...made in taiwan.... on another chip is written is
ite. and its color is yellow deep. year 1999.
bios is award 1998 model .
atx power
RAM any 100 ,sd ram,
agp creative lab. 4 mb..

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