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How can i fix a cmos sum checkon a computer that will not boot up

Where do i start and how do i proceed

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  • billandjohan Jan 05, 2009

    I just changed the battery and this problem started

  • billandjohan Jan 05, 2009

    If anyone needs to identify their chipset or motherboard mfg...check www.wimsbios.com it has a super writeup and charts to help you identify them.

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  • 37 Answers

It may simply be necessary to replace the flat battery on the motherboard.

Posted on Jan 05, 2009

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1 Answer

The computer is not booting and I'm not sure what the problem is. It's done this before and eventually booted normally. I went into the BIOS to try to restore setting but could not find it. Help me pl


Press F5 during start up to enter safe mode and see if it boots then. CMOS values may have changed if CMOS battery is dead and values reset which means the computer no longer knows your drive type.
Try saef mode start up first then hit either DEL key or F1 to enter CMOS Bios at start up to see if Hard Drive make and size are posted.
- It's a start!

Dec 15, 2012 | PC Desktops

Tip

SEEK ZERO ERRORS


DISKETTEDRIVE ZERO ERROR. OR CHECK SUM FAILED ERRORS . SIMPLE FIX CHANGE BOOT ORDER TURN OFF A DRIVE AND CHANGE CMOS BATTERY . FIND CLEAR CMOS PINS ON MOBO AND SWITCH JUMPERS . RESTART AND RUN

on May 15, 2010 | PC Desktops

1 Answer

HELP dell inspiron 531s boots to message cmos "checkum error" and freezes


It is possible that the floppy drive has failed and that it is causing an error as at boot up the cmos is unable to complete the required tests that it performs and brings u the error to alert you to a problem. This is an easy fix but before I continue I will ask you this. Think about when was the last time you used your floppy drive?

If you replied with can't remember or ages ago then it is time you disable your floppy drive as it is now virtually an obsolete piece of hardware and secondly the actual drives are no longer made for internal use anymore the USB counterparts are just as good if not better.

If you answered just the other day then it is most likely that it has failed and that you will still have to follow y fix and purchase a USB external floppy drive.

The Fix :

Ok start up the computer and when you get the chance to enter your cmos screen enter it then find where your floppy drive , hard drive setting are disable your floppy drive, then save your changes and exit let your pc restart and this should solve your problem if you do this and you still have the error occurring then please contact your pc's manufacturer for further technical assistance.

Sep 03, 2012 | Dell Inspiron 531s Desktop Computer

1 Answer

My Compaq Presario SR1575CL suddenly has no sound. Had worked fine until yesterday. No recent changes.


ok two places to check

on bottom right of screen(desktop) there should be a speaker icon click on that to ensure it is not muted

2. start button control panel sound icon

click and check to see if settings are ok

do those first and let me know results.

May 27, 2012 | HP Compaq Presario SR1575CL (PX808AA) PC...

2 Answers

I have Acer 1200 Aspire. When I turn it on, it won't proceed past the initial window. It says boot failure.


It almost sounds like your primary boot disk is incorrectly selected in the BIOS. On older machines, the primary disk on the primary cable had to be the boot disk, but nowadays almost any device can be selected as boot disk. Check your BIOS setting and ensure that the hard disk partition that you have Windows installed on is selected as the first boot device. Otherwise, the system may be looking in the wrong place for the OS and giving the boot error.

Jan 07, 2012 | Acer Aspire X1200-B1601A PC Desktop

2 Answers

Operating system not found dont have a recoverry cd


do you have any external harddrives or flash drives plugged in? iv found that can sumtimes confuse sum systems?

May 18, 2009 | E-Machines eMachines Desktop PC

2 Answers

COMPUTER CHECK SUM ERROR'S ?


if you can enter bios (usually by pressing f2 or del), then load the default settings, otherwise, you will have to position the jumper properly, instructions for that are as follows.

1. Touch an exposed metal part of the case to ground yourself.
2. Unplug the power supply from the wall.
3. Move CMOS reset pins to short pins 2 and 3, then wait 10 minutes.
4. Replace CMOS reset pins back to 1 and 2.
5. Replug the power supply and boot.

Jan 20, 2009 | Acer Aspire™ T180 PC Desktop

4 Answers

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


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.

Dec 28, 2008 | PC Desktops

1 Answer

CMOS COMPLAIN


Bios Eprom issue. Get a new motherboard

Dec 25, 2008 | PC Desktops

1 Answer

Keyboard and Mouse not responding after CMOS Battery replacement.


You may have to reset (turn on) those devices in the CMOS setup.
Typically, you can access that menu by holding down either F5 or F8 (not always the same) and then turning the power on.
One of these should bring up a simple menu with 8-10 choices.
Depending on the BIOS used, setting input/output devices may be semiautomatic or manual.

Apr 28, 2008 | E-Machines eMachines Desktop PC

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