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How do i reset CMOS on kv8 pro? getting POST code 25 comp not booting up, tried replacing ribbon cable, also unplgged keyboard. HELP!!!

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Unplug your computer, then you will find a small battery on the motherboard, this is a small silver disk shape. you need to remove this by pressing the clip to its side, this lets it spring free. you then need to locate the cmos jumper. this is a 3 pin stand off with 2 pins already covered by a plastic sleeve. remove the sleeve and place it over the other two pins, wait a few seccons then put everythinbg back to the way it was. put the jumper back in its origional position and re-attach the battery making sure it is the right way up. plug in your system and give it a try.

Posted on Dec 28, 2008

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Solution:

i) you can rest CMOS in two ways:

   a) open or dismantle the computer tower,you will find motherboard, closely observe a silver colored        circulated watch battery(looks like circular coins....) try open the battery byusing screw-drivers           gently...and wait for few seconds and replacing again in the same way u removed and close                the tower and start system , you will some message on balnk screen saying:

      CMOS check sum error or some changes are mades try to follow onscreen instructions or press       the  F1 to continue...thus we can CMOS reset


   b) when you start ur system from the begining tab the DEL or F1 or F10 button which will take ur           BIOS SCREEN in the bios screen press the button F5 and then press F10 which will show               message to save click yes....and ur will start woking .... then CMOS reset...





                                            


 

Posted on Dec 28, 2008

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On your motherboard, take out the CMOS battery for about 30mins then insert it again. Make sure that you are carefully taking it out. CMOS battery is a metallic circle shaped found on your motherboard.

Posted on Dec 28, 2008

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The only way to reset CMOS is to remove the battery on the motherboard. It's a small battery looks like a watch battery, It keeps juice to the motherboard when the computer is turned off so the date and time stay current. Take it out and wait about 10 minutes. Put it back and boot. CMOS will be set to defaults.

Posted on Dec 28, 2008

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1 Answer

I reset my cmos on my dimension c521 and keyboard and mouse dont work. how can i get to bios?


You might want to try a Microsoft common keyboard that hooks to the USB on your Computer same with the Mouse

Jun 01, 2012 | Dell Dimension C521 PC Desktop

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BIOS error, System Failure, Boot failure? ? Lets FIX it.


I guess everyone working on a computer is familiar with the word BIOS and what exactly it is? Still let me tell that BIOS is intelligent software that enables the system to start. I need not to mention that system here refers to computer. Bios facilitate the booting of a system without human intervention. BIOS is a program that is installed in a hardware chip known as ROM chip.

This single word matters a lot to most of the users who face various problems when their system failed to start normally or make some unusual activities. Each time I visit any technical forum I see a lot many users posting their problem regarding BIOS. I researched on internet about BIOS errors and from my knowledge and experience I am posting this piece of help for those who find themselves helpless in getting a solution to BIOS problems.

Sometimes BIOS itself provide a troubleshooting to most of the problems. When you power ON your system it give beep sound. Checkout some beep codes
1 short Beep indicates System is OK (Acceptance Beep)
Continue long Beep tells RAM Problem
1Long 3 Short Beep confirms RAM Problem
2/3/4 short Beep --its time to Check the RAM & Video Card

By now most of you have found some clue about the problems you are facing. Now learn about POST faults
1) K/B Error/ NO Keyboard present
· Check the loose cable connector
· Cable may be bad (Keyboard)
· K/B itself may be bad
· Check the physical condition of K/B connector on M/B
· If all these are ok & problem is still processed
· Than replace the keyboard port

2) Floppy disk drive Fail
· loose data & power connector of FDD
· Data cable may be bad (FDD)
· Load the CMOS defaults
· Floppy disk drive itself may be bad

3) CMOS Checksum error
· CMOS battery has gone bad replace it. (Weak)
· Check the CMOS jumper it may set on clear
· If the entire ok than check the CMOS battery jack, it may be bad

4) Invalid System Disk, Insert System Disk & Press enter when ready/ NTLDR is Missing
· Check the root directory; it may be formatted or missing bootable files.
· Repair the Windows or Reinstall the operating system.

5) Disk Boot failure, Insert System Disk & Press enter when ready
· Hard Disk check in POST Detected or not
· If not Detected Check the power cable
· Check the Master/Slave jumper setting.
· Also check BIOS setting

6) Computer gives message: Your computer has a serious problem
Back up your data & replace your Hard Disk
This error message is displayed due to the SMART option. This scans the HDD for errors, if it detect the errors than it show the above message. Follow the error message & back up your data on to another drive.

I tried to explain most of the problems along with their solutions. There could be a lot more solutions for the problems. Make your own search and try to fix BIOS problems at your own home.
Forward this to all those who need help!!
SOVI



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2 Answers

My pc won't boot and is not recognizing any commands such as del, f10 or f12, what can I do


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Hi,
i can help you with the Post-Code Beeps.
AMI Bios= 2 Beeps. Parity error In First 64k Ram. ( reseat Memory ) Post Failure 1 or more Of the Hardware test Have Failed.
IBM Bios= 2 short Beeps. Post Error ( Memory Possibility ) review screen for details.
AWARD Bios Codes = 2 Short Beeps. Any Non-Fatal Error. Enter CMOS setup to reset.
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Mike @ Compurepair.

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