Tip & How-To about Computers & Internet

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

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Bad Locksum BIOS CD_Rom not found when I try to


it's not locksum ,its Check SUM or CRC errors.
what OP, are you running,? windows what. i guess.

the CMOS battery just died.
install a new one.
all puters this old do that, the battery is good for 7-10 years,
and all fail.
DO NOT FLASH your BIOS, fix the real problem first

when the battery dies, all our bios setting were lost
including boot device, and order
fix battery
then go into BIOS and put back boot order.

Mar 22, 2017 | HP Pavilion a815n (PS512AA) PC Desktop

1 Answer

PCCHips M955G V:3.0A. When i put on the system, the windows go down and the led shown a lot of messages. The main problem is: CMOS ckecksum BAD.


You may have damaged the motherboard or memory... However, I don't see how you inserted the memory backwards. 168-pin memory is keyed and can usually be inserted only one way. A CMOS check sum error is usually caused by corrupted data in the CMOS memory. When the computer boots it adds all of the ones and zeros in the CMOS and drops the carry bit. It compares the resulting sum to a like (we hope) sum that was generated when the CMOS data was produced. If the two do not match, the CMOS is presumed corrupted, and an error is generated. The corruption can be caused by defective CMOS memory or power problems caused by a shorted motherboard, an expansion card that is not properly seated, a defective component, etc. I would check the battery with a multimeter and make sure it is good and installed correctly. Some older motherboards have a CMOS battery soldered onto the motherboard and have a jumper which must be changed to use an external battery. The battery on the motherboard should be removed if an external battery is installed. It can leak and damage the motherboard beyond repair. Do not use a soldering iron or anything hot to remove a battery form a motherboard. The battery can explode. I use a combination of pliers and diagonal cutters to remove these batteries. The computer must be unplugged when doing it and care must be employed (not an operation for an overly ambitious gorilla). Some batteries include the system clock, are usually black and rectangular, soldered to the motherboard, and are supposed to have a 10 year or greater lifetime. When they fail, the motherboard is usually a goner. Most motherboards have a jumper, which can be used to discharge (erase) the CMOS memory, and this may fix the problem. Be sure the computer is off and unplugged, move the jumper to the discharge position, wait 10 minutes, move it to the normal position, attach the power cord, and turn-on your computer. Some motherboards can be damaged it the computer is powered on with the jumper in the discharge position

Sep 30, 2010 | PC Chips M955G Motherboard

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 Aspireā„¢ T180 PC Desktop

1 Answer

I am getting 1 long beep and then 6 short ones


Hi canturob,
When a system reports a check sum error the bios is telling you the information stored from the last working boot does not match the current settings stored in the bios. Please power down your MSI system, unplug the power cord. Open the case & clear the bios. Location of JBAT1 on page 3 in manual.
Clear CMOS Jumper: JBAT1 page 10 in the manual. Remove the battery/cmos. Check it's voltage with a volt meter. It should test to 3volts DC. Anything less & the battery needs to be replaced.
While in the case re-check all data cables & power cables for good connection.
The MSI board uses the Award bios. Your current beep code of 1 long & six short is not a common beep code for the Award bios. See bios beep codes here: http://www.bioscentral.com/beepcodes/awardbeep.htm

If the battery checks out ok, you may need to update the bios. Go to MSI: http://global.msi.com.tw/index.php?func=downloaddetail&type=utility&maincat_no=1&prod_no=205
To update your MSI bios (Option only if bios clear fails to resolves the check sum issue).

Good luck canturob!
Mike

Dec 03, 2008 | MSI PM8M-V Motherboard

2 Answers

After 18 month the computer will not go into POST on a re-start but will start normally when completed turned off.


simple. clear the CMOS by using clear cmos jumper setting or remove the cmos battery and put it again and then change the bios settings as per ur machine configuration.

Feb 23, 2007 | Foxconn NF4UK8AA-8EKRS Motherboard

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