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how can I determine if I killed my mobo


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#1
ken baker

ken baker

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was having problems booting system for first time
system tried checking nv ram, then froze
read intsructions for similar problem was suggested to reset c-mos
looked in case, it appears that the jumper was in reset all along
I put the jumper where I thought it should be (save) now I get nothing
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#2
Samm

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Welcome to G2G

You said you think the clear cmos jumper was in the clear position the whole time before - this seems unlikely to be honest. It does sound though that it is in the clear position now!

Just to be certain, can you tell me what is printed on the motherboard next to the clear cmos jumper? (This is usually something like 'CLR_CMOS, JP1 or JPBAT etc).

The clear cmos jumper should consist of 3 pins in total (2 of which will be covered by the jumper itself). One of the end pins should be marked with a '1'. This then means obviously that the middle pin is number 2 & the last pin is 3.
Which 2 pins is the jumper cap currently covering? (ie pins 1-2 or pins 2-3)?
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#3
ken baker

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I agree, I don'tthink it should have worked at all in the clear position, but here is what I have


board is MSI k8t Neo2 (VIA K8T800Pro)
jumpers are labeled jbat1
three pins up an down
top pin three. bottom one according to manual
jumper 1,2 keeps data
jumper 2,3 clears data
I am working on the same computer that I am using now and it looks like the jumper was set correctly, but having cleared cmos, now I can't get a POST
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#4
ken baker

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ok, now having put the jumper in the correct position, I got a post.

but I am told noe that "CMOS/CPNV Checksum Bad"

Am I wasting my time with this mobo, or do you think it can be fixed?
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#5
Samm

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NO, the cmos/checksum error is perfectly normal because you have just cleared the bios. The system notices that something has changed in the bios since the last boot up, and so gives the checksum warning.

Are you able to boot from a floppy disk or hard drive yet?
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#6
ken baker

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No, I have not been able to boot from a cd or floppy yet, any suggestions?
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#7
Samm

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Right, if you insert a bootable floppy disk & attempt to boot from it, what happens?

Can you also tell me what the rest of your system specs are please?
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#8
ken baker

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Black screen nothing...

MSI k8t neo2 mobo
120 gb western digital sata hdd
mitsumi 8 in 1 floppy
1 gb memory
agp video card ATI all-in-wonder 9600 128 mb ddr
AAopen dvdrw
windows xp pro sp2
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#9
Samm

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Do you still get the bios screen coming up like before though, before it goes blank?
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#10
ken baker

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yes, bios screen does appear, and I cand enter setup
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#11
Samm

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yes, bios screen does appear, and I cand enter setup

View Post


was that you CAN or CAN'T enter setup?
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#12
ken baker

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oops sorry about that.
yes I can enter setup
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#13
Samm

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Hi

I need to ask a couple more things before we go any further :

Can you tell what sort of floppy drive the Mitsumi 8-1 drive is? ie, is it the USB version or standard floppy drive interface?

your mobo should come with a diagnopstic d-bracket. Do you have this connected & if so, do you get any diagnostic codes coming up when the system boots up?

Do you hear any beeps when the system is booting?

When it has booted to the blank screen, does the monitor LED turn orange to indicate standby mode or does it remain green?

What CPU do you have?

Have you checked to make sure the 12V ATX (4 pin) connector is plugged into the motherboard?
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#14
ken baker

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the floppy uses both standard fdd cable, and a usb cable

mobo did come with a d-bracket, didn't even think to use it yet

no beeps, there is no pc speaker

monitor light stays green

amd socket 939 athlon64 3000

atx plugged in
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#15
Samm

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OK, thanks for the info.

Don't suppose you have a standard floppy drive do you? This would make life a lot easier for now if you do.

If you don't have one, I suggest you try the following :
Disconnect the sata cable from the mobo & disconnect the power to the drive.
Disconnect the floppy drive cabling from the mobo.
Leave only the CD-ROM drive connected (make sure it's jumpered to be a master).

Power up the system & go into the bios. Change the boot sequence so that the CD-ROM (or optical drive) is in first place.
Make sure that the bios auto detects the CDROM drive correctly.

Set the floppy drive 'A' to 'not installed' or change the setting called 'floppy drive seek' to disabled.

Insert your Windows CD, save the changes to the bios & exit.
The system (should) reboot from the windows CD. You won't get very far after this point due to the hard drive being absent but at least we will get a better idea of where the problem lies.

Let me know how you get on

PS connect up the d-bracket & let me know what the diagnostic code reads
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