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bobdylan75
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motherboard MS 7500 Ver 1.1 jumper to reset bios

I have reset the bios eith the switch near the battery,
but now:
The green led is on.
But nothing happens.
No signal on screen,
no led on in the keyboard.

What Hava I to do now?
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bobdylan75

8/22/2022 - Mon
NikolasG

Hi
You need to switch the jumber back to it's initial position.
bobdylan75

ASKER
It's a jumper that returns automatically to its position. Now I put out the battery for half an hour and I wait the result...
Have you another idea? ;)
thanks
bobdylan75

ASKER
note that I have two identical motherboard and I made the same 'error' with the same result.
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bobdylan75

ASKER
It's not a switch, uit's a little spring lever.
bobdylan75

ASKER
sorry: it's not a jumper: it's a little spring lever.
NikolasG

Hi, if it's a button than you press for bios reset then you don't need to do anything else.
Did you try with an other power supply?
Are both the ATX and ATX 12V powers connected?
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bobdylan75

ASKER
NO, I don't have at the moment another power supply.
BUt it's not possible that is a issue of the cpu?
NikolasG

CPU's tend to break down more rare than the power supplies and motherboards.
When you power on the pc do the fan start normally? Is there any sound coming out of the pc? Any kind of beeping sound?
bobdylan75

ASKER
With the original power supply:
No sound, No beep, only green light on. No fan. The only Fan is that one of the power supply.

With another power supply:
4 beeps with red light on.

I have allready change the motherboard, and at the moment I'm using the new one.
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bobdylan75

ASKER
Before I reset the bios: 9 beeps with red light blinking, with both the two motherboards.
bobdylan75

ASKER
sorry: The cpu fan is on, with the original power supply.
NikolasG

So with 9 beeps it means that there is a chem sum failure. If after the bios reset it didn't come to then we have an either dead motherboard or a faulty bios.
The 4 beeps that you mention are all short or generally how are they?
You could check the general fault checking steps.
Meaning disconnect all hardware except the most important ones (motherboard, CPU, RAM and VGA card if it's not onboard) reseat the RAM chips or try  different RAM and start from there.
The second power supply that you are using and the second motherboard do you know if they where working? It is very frustrating when you are changing not working hardware with other not working hardware and you don't know it.. :D
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bobdylan75

ASKER
The 4 beeps are all short.
I have already try different memory cards (new).
I have change motherboard with a new one (refurbished).
The power supply was not new :(
The strange thing is that both the two motherboard gave 9 beeps before reset them.
The only two thing that I have no chage are the cpu and perhaps the power supply.
I will try with a new power supply.
bobdylan75

ASKER
I have tried with a new power supply: 4 beeps with red light blinking.
ASKER CERTIFIED SOLUTION
NikolasG

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bobdylan75

ASKER
So I have buy a broken matherboard as the original one?
very strange.
I'll try with diffenter memory cars (even if I have already try).
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bobdylan75

ASKER
why after press rest spring lever near the bios, the screen doesn't work, the keyboard doesn't work, fans work, and nothing happens.
This happens with both the two motherboard, the new one and the older one.
NikolasG

can you please attach a picture of you motherboard?
The one that I found says that it's a hp motherboard is that it?
The spring button should come back at it's original place after you press it. If not try pulling it back at it's place.
please feed back.
bobdylan75

ASKER
The picture you link is the right one.
Th pc is an HP.
Yes, the spring lever works properly.
Today, I will try to use different memory cards.
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bobdylan75

ASKER
thanks,
at the end was the cpu ;)