I had been troubled by this for weeks now and i still do not know exactly where the problem really lies. I had changed a new motherboard (ABIT KN9 Ultra) and this problem start appearing. I can't install anything as long as the media that stored the software is a CD/DVD cos a crc error will pop up somewhere along the way. I tried cleaning the disc and even went into the trouble of changing the drive but the problem still persist. I'm now suspecting somewhere in the motherboard fault lies. I'm not sure, and I'm too wary to make sure... I'm really running out of ideas here, can u guys give me a hand?

[Reply or follow-up to this message]

Most common problems I have observed when it happens on a new motherboard is:

1)  Need an 80 conductor cable, or a new cable..  Believe it or not, incompatible 
ROM drives in some cases

2)  Bugs in the chipset requiring a patch/new drivers (which not be available yet).. 
 Had it happen on older VIA chipsets as some ROMs were incompatible..  MB manufacturer 
needs to release updated drivers/patches if this is the case.

3)  HDD controller bad on the motherboard, replace board..

4)  In rare cases, this can be a memory issue, timing/setup etc, or bad memory, or 
using memory not recommended for the board.  Your manual should list recommended 
memory that has been tested on your model board.

Memory checker: http://oca.microsoft.com/en/windiag.asp

By your description, I wouldn't suspect the HDD but I have observed it happen due 
to a bad drive or cabling issues on PATA drives, or the need for a driver patch as 
mentioned before.  Haven't observed it yet on SATA drives but anything is possible.

Contact the manufacturer for assistance as it should be under warranty hopefully.







On Friday, October 12, 2007 at 9:18 am, PCnerd wrote:

>I had been troubled by this for weeks now and i still do not know exactly where 
the 

>problem really lies.

>

>I had changed a new motherboard (ABIT KN9 Ultra) and this problem start appearing. 

>I can't install anything as long as the media that stored the software is a CD/DVD 

>cos a crc error will pop up somewhere along the way.

>

>I tried cleaning the disc and even went into the trouble of changing the drive but 

>the problem still persist. I'm now suspecting somewhere in the motherboard fault 

>lies. I'm not sure, and I'm too wary to make sure...

>

>I'm really running out of ideas here, can u guys give me a hand? 

[Reply or follow-up to this message]

I don't think my RAM are incompatible...since i'm using the same ones before the board is changed. back then the system works perfectly. But nevertheless i will still check my ram. The 80 conductor cable u mentioned is......? (forgive my ignorance, i'm a PC nerd)


On Friday, October 12, 2007 at 9:46 am, C K wrote:
>Most common problems I have observed when it happens on a new motherboard is:
>
>1) Need an 80 conductor cable, or a new cable.. Believe it or not, incompatible
>ROM drives in some cases
>
>2) Bugs in the chipset requiring a patch/new drivers (which not be available yet)..
> Had it happen on older VIA chipsets as some ROMs were incompatible.. MB manufacturer
>needs to release updated drivers/patches if this is the case.
>
>3) HDD controller bad on the motherboard, replace board..
>
>4) In rare cases, this can be a memory issue, timing/setup etc, or bad memory, or
>using memory not recommended for the board. Your manual should list recommended
>memory that has been tested on your model board.
>
>Memory checker: http://oca.microsoft.com/en/windiag.asp
>
>By your description, I wouldn't suspect the HDD but I have observed it happen due
>to a bad drive or cabling issues on PATA drives, or the need for a driver patch as
>mentioned before. Haven't observed it yet on SATA drives but anything is possible.
>
>Contact the manufacturer for assistance as it should be under warranty hopefully.
>
>
>

[Reply or follow-up to this message]

The old 40 conducter cables were used on the UDMA mode 2 (33) PC's.  When the speeds 
went to UDMA mode 4, 5 and 6 (66, 100, 133) speeds, the cables were made with a ground 
wire between each conductor.  Thus, there are twice as many wires on the ribbon and 
they are a lot thinner than the old 40 cables.  If you compare them side by side, 
you can see the difference.

As for the memory, if it is the same make and model board, then there shouldn't be 
an issue, but if it is different, even different model boards from the same manufacturer 
can require different memory.  As a side note to this, I had one new board that had 
a bad memory controller and would throw CRC errors from the drives on any memory 
I tried on the first slot..  Eventually they all failed very quickly.  Have only 
observed a handful of boards out of thousands do this, but it does happen.

There is a picture here:

http://en.wikipedia.org/wiki/Advanced_Technology_Attachment

that you can enlarge and sort of see the difference between the conductor size and 
amount of conductors in the cable as well as an explanation of the two.. 







On Friday, October 12, 2007 at 10:20 am, PCnerd wrote:

>I don't think my RAM are incompatible...since i'm using the same ones before the 

>board is changed. back then the system works perfectly. But nevertheless i will 
still 

>check my ram.

>

>The 80 conductor cable u mentioned is......? (forgive my ignorance, i'm a PC nerd)

>

>

> 

[Reply or follow-up to this message]

u mean even a defective memory may cause this? cos i DO hav a defective ram slot on the motherboard. Of course it's empty now, but does it still affect the system as a whole? And also, the crc error only come while i attempt to install big software. But miraculously, I installed 5 software in a row without restarting the computer yesterday.(NFS carbon, C&C3, Bioshock, MOH Aiborne and Office 2007). But after i restart the com and attempt to install resident evil 4, the error comes back. I just discover another fault in my system, windows only load some of the essential drivers during startup. I installed the display drivers, audio drivers umpteen times because of this. The computer never startup loading both the drivers, either i hav the display one and not the audio one or vice versa. Does all this faults come down to one comclusion: Change the motherboard?


On Friday, October 12, 2007 at 10:34 am, C K wrote:
>The old 40 conducter cables were used on the UDMA mode 2 (33) PC's. When the speeds
>went to UDMA mode 4, 5 and 6 (66, 100, 133) speeds, the cables were made with a ground
>wire between each conductor. Thus, there are twice as many wires on the ribbon and
>they are a lot thinner than the old 40 cables. If you compare them side by side,
>you can see the difference.
>
>As for the memory, if it is the same make and model board, then there shouldn't be
>an issue, but if it is different, even different model boards from the same manufacturer
>can require different memory. As a side note to this, I had one new board that had
>a bad memory controller and would throw CRC errors from the drives on any memory
>I tried on the first slot.. Eventually they all failed very quickly. Have only
>observed a handful of boards out of thousands do this, but it does happen.
>
>There is a picture here:
>
>http://en.wikipedia.org/wiki/Advanced_Technology_Attachment
>
>that you can enlarge and sort of see the difference between the conductor size and
>amount of conductors in the cable as well as an explanation of the two..
>
>
>

[Reply or follow-up to this message]

Yes, even defective memory or the controller can cause it.  I'm afraid it does sound 
like a motherboard change is in order.  When you are running the drives in DMA mode, 
you are essentially bypassing the CPU for the most part and loading data directly 
into memory, so CRC can be referenced without really knowing what the cause is, either 
memory/memory controller/slots/IDE controller or the drives can be at fault.  All 
I can say is good luck!!!  ;-)  If that doesn't work(motherboard change), then test/swap 
everything one at a time including all of the drives.  Sometimes that's all we can 
do, even on a test bench.







On Friday, October 12, 2007 at 5:31 pm, PCnerd wrote:

>u mean even a defective memory may cause this? cos i DO hav a defective ram slot 

>on the motherboard. Of course it's empty now, but does it still affect the system 

>as a whole?

>

>And also, the crc error only come while i attempt to install  big software. But 
miraculously, 

>I installed 5 software in a row without restarting the computer yesterday.(NFS carbon, 

>C&C3, Bioshock, MOH Aiborne and Office 2007). But after i restart the com and attempt 

>to install resident evil 4, the error comes back.

>

>I just discover another fault in my system, windows only load some of the essential 

>drivers during startup. I installed the display drivers, audio drivers umpteen times 

>because of this. The computer never startup loading both the drivers, either i hav 

>the display one and not the audio one or vice versa.

>

>Does all this faults come down to one comclusion: 

>

>Change the motherboard?

>

>

> 

[Reply or follow-up to this message]

Just one more question before i get down working 24/7 for the whole of next week. If there's a fault in the ram, will windows even boot up at all?


On Friday, October 12, 2007 at 5:50 pm, C K wrote:
>Yes, even defective memory or the controller can cause it. I'm afraid it does sound
>like a motherboard change is in order. When you are running the drives in DMA mode,
>you are essentially bypassing the CPU for the most part and loading data directly
>into memory, so CRC can be referenced without really knowing what the cause is, either
>memory/memory controller/slots/IDE controller or the drives can be at fault. All
>I can say is good luck!!! ;-) If that doesn't work(motherboard change), then test/swap
>everything one at a time including all of the drives. Sometimes that's all we can
>do, even on a test bench.
>
>
>

[Reply or follow-up to this message]

Depends on the fault and how serious it is.  Lots of possibilities on that one. Faults 
may show up after the system has warmed up, to faults/issues happening when that 
particular area of RAM gets used.  A bad slot or memory controller will be consistant 
depending on the RAM usage and load. (generally be consistant if how you use the 
machine stays the same like programs, utilities used etc, even drivers being loaded 
into the effected memory area)







On Friday, October 12, 2007 at 8:34 pm, PCnerd wrote:

>Just one more question before i get down working 24/7 for the whole of next week.

>

>If there's a fault in the ram, will windows even boot up at all?

>

>

> 

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