Question about IBM ThinkPad A21m 2628 Notebook

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Error 0175 hi i'm sri lankan. i cant english much. i have ibm a 20 m laptop.it can power on and sho post screen, then it shows error o175;bad crc 1 whats this problam, please help me.thank you.

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A bad CRC1 is a failed motherboard component, that generally has to do with the bios programming. Unfortunately, motherboard replacement is your only option.

Posted on Aug 26, 2008

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Error 0175: Bad CRC1, stop post task


Hi,

ERROR
0175: BAD CRC1, STOP POST TASK.

Firstly, this error is generated due to a couple of different reasons. First, there may actually be a problem with the power circuitry and the CRC function is actually doing it's job reporting the error. There are several tests you can perform to tell if this is the case with your system.

Secondly, this bad CRC error can be generated by sudden power loss to the system, especially if the system loses power during boot up or POST process. Both mean that there could be a problem with the motherboard and it needs replacing.

Try the steps below to determine what is wrong.

1) Start the system and watch the status lights in the LCD hinge or near the power button. They should flash once (some models twice) before the system shows a display. If they flash 3 times or more, you have a power problem.

2) Start the system and allow it to reach the CRC "stop post task" error message. Let it sit at this error for several hours. The system should sit at this error for ever or until user intervention occurs.

3) Some things to watch for while the system is sitting at the CRC error and running for several hours would be: Screen going black, System rebooting, System powering off, ect.. ect.. ANY activity by the system is a warning that power problems exist in the system.

4) Try restarting the system several times consecutively, shut the system down by holding the power button for 5 seconds, then restart keeping an eye on the status lights for any additional flickers.
All the above tests should be done with AC power applied and battery installed. Also ALL drives installed.



Regards.

Jan 19, 2011 | IBM ThinkPad T23 2647 Notebook

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Ibm notbook. how will i solve "bad crc1, stop post task. with an error code 0175?


The POST error code 0175 refers to a CRC (cyclic redundancy check) reading from the EEPROM chip, that data is corrupted, most likely a faulty EEPROM chip. This is a motherboard problem and cannot be fixed except by a motherboard replacement. This is an old laptop and would not be worth fixing, I suggest you put your money towards a new laptop.
You can remove the hard drive and put it into an USB hard drive adapter case and use it as an external USB hard drive.

Jul 12, 2009 | IBM ThinkPad A21e 2655 Notebook

1 Answer

ERROR 0175 BAD CRC1 COMMAND STOP POST TASK


the crc is the cyclic redundance check your bios is corrupt. you will need to flash the bios to bring it back the internal bios bottery will need to be removed for 1 min then replace. it should bring it back if not you bios chip has burnt out. i have never replaced a bios chip but you will have to find one to replace it

Jun 24, 2009 | IBM ThinkPad T60 Notebook

1 Answer

CANNOT START BOOT GIVING EROR CODE 0175


This error seems to represent motherboard problems and most likely requires new motherboard. Unfortunately most laptops that are a few years old arent worth fixing, unless you can do it yourself. Try to find a used model same as yours for parts.
Good luck!

Char S.

May 21, 2009 | IBM ThinkPad T20 2647 Notebook

2 Answers

CRC Problem


Chances are since the system CRC1'd it has a very old BIOS revision. From version 1.10 on, the CRC issue has been fixed. So, get the latest BIOS from IBM, T21 BIOS: ftp://ftp.software.ibm.com/pc/pccbbs/mobiles/spsdkz34.exe and flash the BIOS. Reboot the system and verify the updated BIOS. Now power down the system, desolder the known good EEPROM and resolder the CRC1 EEPROM. Boot the machine and hit ESC when the splash screen comes up and watch the post screen. The new BIOS should have recalculated the EEPROM checksum and written the changes to it. You'll know if it worked because the CRC1 error will be gone.

Jan 03, 2009 | IBM (09N5424) Motherboard

1 Answer

IBM Laptop A22e Display an error 0175


The CRC error (POST = power on startup test) on boot up refers to the BIOS settings. This could be cause by a near flat BIOS battery and it needs to be replaces. If it is not the battery you need go to the BIOS to correct any faulty settings.

Nov 29, 2008 | IBM ThinkPad A22e 2655 Notebook

1 Answer

While booting error " bios shadowed " & 0175: bad crc1, stop post task


sounds like cmos battery flat small battery inside pc to retain cmos setting when pc switched off

Oct 02, 2008 | IBM ThinkPad T20 2647 Notebook

1 Answer

ThinkPad T22 will not boot to windows


I've seen several T20 series with the same problem. A CRC error pertains to a chipset on the motherboard, and the only way I've found to fix a CRC error is to replace the motherboard.

Jul 07, 2008 | IBM ThinkPad T22 2647 Notebook

1 Answer

Error code 175


If you have access to the internet another way, search the error code by googling it, or going to the IBM website and searching it anf for solutions.

May 19, 2008 | IBM ThinkPad A21m 2628 Notebook

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