Question about IBM ThinkPad A21m 2628 Notebook

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0175 crc1 stop post task. can u please help how 2 fix this problem.. THANK U VERY MUCH...

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Re: 0175 crc1 stop post task. can u please help how 2 fix...

Well, bad news. A bad crc usually means the cheapest way out is a new board.
You've got hardware issues.
Good luck

Posted on Dec 23, 2007

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ERROR 0175: bad crc1, stop post task

0175: bad crc1, stop post task ,ibm t20

Jan 16, 2011 | IBM ThinkPad T20 2647 Notebook

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ERROR 0175: Bad CRC1, stop POST task message Been using my IBM a30 laptop for some months but was surprised to get this error when i tried putting it on this message pops up ERROR 0175:BAD CRC1 STOP POST...

You obviously didn't read the problem carefully. The machine won't boot, so there is no command line. I have the same problem with a T23. It might be the CMOS battery that needs to be replaced.

Jan 11, 2010 | IBM ThinkPad A30 Notebook

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Post problem

If it beeps (which it should) means that some device did not pass post. Find your motherboard online and look up the beep codes. This should help you to discover the problem. I hope this helps!

Jul 15, 2009 | IBM ThinkPad A21m 2628 Notebook

1 Answer


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

Error 0175 bad crc1

Numeric error codes - ThinkPad General From IBM Web Site
· The most likely cause is listed first.
· A numeric error is displayed for each error detected in POST or system operation.
· In the displays, n can be any number

Error code
Symptom or error

Field replaceable unit or action, in sequence

Bad CRC1, stop POST task. The EEPROM checksum is not correct

This problem you may not be able to fix. There are a couple of things you can try.
1st Keep on rebooting your laptop until this error goes away.
2nd Replace the BIOS battery, it maybe nearly worn out. After replacement you need to go into the BIOS setting to set the Date & Time.
System board

May 16, 2009 | IBM ThinkPad T20 2647 Notebook

1 Answer

Thinkpad A-20 will not boot

if you added new memory you need to remove it
that causes error 0175 on the thinkpad
let me know if this solved your problem
please rate me

Jan 23, 2009 | IBM ThinkPad A21m 2628 Notebook

2 Answers

0175: bad crc1, stop post task, system bios shadowed

Go on tis forum and post your problem. There is also the Lenovo forum. I have a T23 and haven't seen this error before. These Forums are very good for information on your laptop.

Oct 02, 2008 | IBM ThinkPad T20 2647 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

0175 crc1 stop post task. can u please help how 2 fix this problem.. THANK U VERY MUCH... cool

CRC1 & CRC2 problems are caused by failed or malfunctioning motherboard components. Fixing this involes tracing the exact problem comnponent, generally a chip, resistor, or capacitor, removing, and replacing it on the board. I will warn you that this is a very technical task, and should be performed by a very good component knowledgable technician, not just any tech can do this. I've fixed a few IBM's with the CRC1 problem, only to have the machine run striaght int a CRC2 problem, and have to start the process all over again. I will also tell you that it's expensive in order to have it done right. It'sgenerally easier andcheaper to replace the motherboard.I know this isn't what you want to hear, heck this isn't what anybody wants to hear, but this is a serious/major problem, and unfortunately there are no simple fixes.

Aug 22, 2008 | IBM ThinkPad T40 2373 Notebook

1 Answer

Stop POST task, bad CRC1 error 0175

There are a couple of possibilities, go to this link for the solutions, but it could be a bad power supply

Aug 07, 2007 | IBM ThinkPad A21e 2628 Notebook

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