Clearing CMOS killed Boot

[JCW]

My son set the jumper to clear the CMOS and powered up the computer before
putting the jumpers in the normal position. Now it won't boot. Is the board
dead or is there a remedy?

JCW

ON a ECS N2U400-A

 

[Shenan Stanley]

My son set the jumper to clear the CMOS and powered up the computer
before putting the jumpers in the normal position. Now it won't
boot. Is the board dead or is there a remedy?

Resetting the CMOS (in my experience) does not make a computer unbootable.
Did you set the jumpers back?
Can you get into the BIOS?
When you say "doesn't boot" - do you mean into Windows?
If you can get into the BIOS - have you made sure the settings for the hardd
disk drive and boot order are back to the way they were?

 

[ByTor]

My son set the jumper to clear the CMOS and powered up the computer before
putting the jumpers in the normal position. Now it won't boot. Is the board
dead or is there a remedy?

JCW

ON a ECS N2U400-A

Is it booting with power?
Is there a message when it boots? <boot device perhaps>
Can you still get in to the BIOS?

It may have knocked out your boot order sequence or detection of
devices........
--
************************************************
The Tobes of Hades, lit by flickering torchlight
The netherworld is gathered in the glare
Prince By-Tor takes the cavern to the north light
The sign of Eth is rising in the air.
By-Tor, knight of darkness,
Centurion of evil, devil's prince.

http://www.thekidfrombrooklyn.com/

 

[RJK]

Powering up with the "clear cmos" jumper set in that position shouldn't make
any difference, BUT, after clearing the cmos you must of course go straight
nack into cmos and check and adjust settings, and particularly, auto-detect
hard-disk, or set it to "auto" - so that the correct hd geometry is set
before you next boot up ! (hoping that it'll match the previous geometry!)

....depending on the board, you may want to disable RAID, if you're using IDE
hard-disk/s, ...you may want to disable USB mouse and keyboard support if
you're using PS2 versions, you may want to set printer support to something
higher than SPP (strandard parallel port),

If present you may want to switch off an onboard sound chip if you've got a
pci sound card plugged in, ...and you may want to set AGP as the first palce
for the bios to look for a graphics card if you've got an AGP graphics card
plugged in, ...then there's settings for the frontside bus speed, and memory
SPD etc.....
....turn off LAN if it's on your mobo and you're not using a network .....

....why did I start to answer this post !!!???

.....mmm and lost of other things !

regards, Richard

 

[JCW]

Hello All,

All I get now is one long beep, and nothing, just a blank screen. I switched
out the video card, Ram, and disconnected all peripherals, still no boot.
Can get to BIOS.

JCW

 

[JCW]

As an adition now I don't even get a beep when trying to POST. ANy ideas?

JCW

 

[Yves Leclerc]

As an adition now I don't even get a beep when trying to POST. ANy ideas?

JCW

Wrong type of video card set to start up in BIOS?? Some BIOS default to PCI
video card but you need to make sure that it "defaults" to your video card type?

 

[Lem]

As an adition now I don't even get a beep when trying to POST. ANy ideas?

JCW

See http://www.pcguide.com/ref/mbsys/bios/set/index.htm for advice/info on
setting up your BIOS properly. You particularly might want to *carefully and
completely* read the section on "IDE Device Setup/Autodetection." If you have a
system that doesn't support autodetection (or if autodetection is hidden and you
can't find it) -- and your son didn't write down all of the BIOS settings before
clearing them -- you'll have to get the disk setup info from the pc
manufacturer. Alternatively, the info required for manually setting BIOS to
recognize hard drives is often printed on the hard drive case itself. You'll
almost certainly have to pull the drive out of the computer in order to be able
to read it.

This site also has a section on troubleshooting BIOS beep codes
http://www.pcguide.com/ts/x/sys/beep/index-i.htm

 

[Shenan Stanley]

As an adition now I don't even get a beep when trying to POST. ANy
ideas?

Although unheard of really - your resetting of the BIOS may have (it may
included something you either did not tell us (another jumper crossed, a
screw under the motherboard, etc.) or it may not have) fried your mainboard.

If under warranty - get it repaired.

If not - take it to someone who repairs them professionally to see if they
can take a look and tell you what is wrong. It may be simple and no one
here - without wildly guessing or having experienced it personally - will
likely be able to tell you remotely.

 

[Roberto]

Hello All,

All I get now is one long beep, and nothing, just a blank screen. I
switched out the video card, Ram, and disconnected all peripherals, still
no boot. Can get to BIOS.

JCW

Dpending on your BIOS manufacturer but one beep signifies RAM
problems, make sure it is seated correctly

rgds
Roberto

 

[Unk]

My son set the jumper to clear the CMOS and powered up the computer before
putting the jumpers in the normal position. Now it won't boot. Is the board
dead or is there a remedy?

JCW

ON a ECS N2U400-A

Make sure the jumper is back. Unplug the PC from the wall outlet. Remove the CMOS battery
(about the size of a quarter & it's by the jumper). Since it's a new system, the battery should
be good. If you have a tester, check it anyway. Remove all the cards except the video card and
one stick of RAM. Wait 15 minutes or so then install the battery, reseat all the cables, plug it
into the wall outlet and turn it on. If it still don't work, you'll have to check the memory
and video card on another PC to eliminate them as the cause.

Why did he clear the CMOS? Did he overclock it? If yes, the CPU is probably toast.

 

[JCW]

Thanks,
I'll try it. He wanted to reset a password so he says. I'll let you know.

JCW

 

[JCW]

I did as directed, still no response. Would it still try to POST if the CPU
was bad?

JCW