BLUE SCREEN - atapi.sys - address f72ef5ed

No matter what I remove or add I cant seem to get rid of this error msg. I switched video cards, switch rom drives, removed memory etc. I switched hard drives and reloaded XP several times.
Any Ideas? Could my system board have gone bad?

atapi.sys - address F72EF5ED base at F72EA000
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Doubtful this has anything to do with your system board. Can you access another PC with atapi.sys and copy that file to a disc? Then burn a Linux Live cd ( is one) and boot from it. It will give you the option to run the Operating System without installing it. Do this and then copy the good atapi.sys file you saved over the one that was already there. If you don't have access to one I can send you one later on tonight.
Steven HarrisPresidentCommented:
atapi.sys is often a target for malware.  Are you installing from an original XP CD or using another method?
rickparyAuthor Commented:
This is an original XP SP2 Disk. And a brand new reformatted hard drive...
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Do you have access to another XP machine with atapi.sys? If not I can send one over in about an hour.
Hello RickPary....that is Nasty!!   as it could be one of a hundred things...

at least you did the hardware checks first...but the xp reinstalls would have been painful...especially to no avail...

if your computer is still booting, but is BSODing when you least expect it then you can do something,  Pull the CD/DVD out for these tests because it is not required to run a machine.

I have had these issues with RAM chips not being slotted properly, with a simple check to remove and test them individually.  eg blow out the dust, slot 1 at a time and reboot.  Run for a while and see if the issue reappears, then do the same for the other chips.

I have also had this type of error with video cards, and windows updates.  Maybe roll back the latest updates on your original drive, assuming you didnt format it.

If you did format it then it is obviously not a virus, which then comes back to hardware..

maybe there are voltage issues on your graphics card or a blown capacitor or fried chip.  Even if you have replaced the card did you replace it from one that was functioning 100%.. This is all too painful to find the one you are testing with is also cactus

finally we come to the mobo and the power supply.  I would start with the power supply as it is easier than the mobo.

failing that do a tightness check of the screws that earth the mobo to the box.  If just one is loose it can cause issues...
hope this helps

otherwise check this link

rickparyAuthor Commented:
Wow, yes I did try re seating the memory modules and removing them 1 at a time.
I am trying a different XP Pro installation disk now.
I formatted two different hard drives.
I was at one time able to boot in safe mode, before I replaced and reformatted.
I have been there and done that.. Unless you are comfortable using it you can screw things up, like i did.  My actual issue at the time was a lose ram chip, for the exact same error  as yours...
rickparyAuthor Commented:
Now I'm getting another error:

PCIIDEX.sys - Address F7707CC2 BASE AT F7707000 DATESTAMP 4802539D.
What the heck is going on? This computer is getting closer to the garbage can...
rickparyAuthor Commented:
Heres a photo of the latest error...
pls advise if you only have one ram stick....
also pls advise if you have onboard graphics..if so remove the video card completely.
only after you do the ram stick is at the stage where you must test one component at a time to make definative decisions
rickparyAuthor Commented:
two 1 gig ram sticks (have not tried sticks on at a time yet when loading)
no on board video (switched video cards already)

if you have no standalone on board video then definitely the one stick at a time....let it run and see if it bsods, then swap and do the same test, just make sure you also use the same ram ensure that its the 1st ram slot also as you machine may not boot otherwise
did you try connecting the disk to another port?
if the disks are IDE  - you can swap the cd and disk drive cable
were you able to boot from a live cd? here a couple :                              ubcd  Win      Knoppix
Make sure overclocking option is disabled in bios.

Enable verifer.

Enable driver verifier
1) Open an elevated command prompt
2) Type "verifier /standard /all"  (no quotes)
3) Reboot your machine
4) Use machine again until it crashes

After the crash & reboot, go into safe mode with networking.

Disable driver verifier
1) Open an elevated command prompt
2) Type "verifier /reset" (no quotes)
3) Reboot your machine

Upload the new minidump for analysis


rickparyAuthor Commented:
Ive booted from the hirems boot cd but not sure which options to choose?
rickparyAuthor Commented:
What does (Kernel panic - not syncing: fatal exception in interrupt) mean?
This came when I ran the Seagate utility on the hirems boot disk
rickparyAuthor Commented:
I am running the Memory86 test and at 50% its giving 35 errors. So does this mean my memory is bad?
hirens syndrome...i use mine to shine up the driveway..I am sure it is good but in an emergency doing something you don't do every day it can be daunting...
if you swapped and tested each component (including ram), especially your HDD then that would leave two things...mobo, power supply..
if you place your hdd in another machine and install xp then you would expect it to work in the original machine. It may have to make some basic system updates to your hardware but other than that you can 100% exclude the HDD and OS as a cause of the problem.
Put your HDD back in the sick machine and see if it boots. If yes, then BSOD then continue your process of elimination, 1 thing at a time (eg ram (stick at a time), vc, ps).
If the HDD boots on the other machine and does not BSOD then you must have a hardware issue.  The mobo is generally the last port of call and can be cheap to replace, especially for older architectures.  Weigh up your downtime with replacement time. My bet is still the ram.

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rickparyAuthor Commented:
129 errors during the Memtest86 at 87%, can I assume its the ram?
Does this disk test the video card and motherboard too?
unless a hirens guru gets on with advice i would be going to the next test
is it possible to quit the test reboot and load another ramstick and start again or are you doing both?
dont assume just yet,,this stuff is all step at a time, why i reckon you should get an xp hdd ready to go unless you already have
rickparyAuthor Commented:
you are very patient Obi-Wan Kenobi, I will take heed and see what happens...
That was with both chips in, I ran one alone and nor errors, I am running the second now in the same spot as the last one. So if neither one shows errors separately and only together what do I assume then? :( That I possible have a bad memory slot?
Or the MB is bad...
Im ready to cash it in...
you cannit use that cd on EE - sorry
but i CAN say that memtest should have NO errors  = ZERO.
so test each stick separately
i use UBCD for all diags - it does not contain pirated software  -
Hardware diagnostic CD    UBCD
 i suggest the UBCD  to run some diags first - to be sure about the basics
go to the download page, scroll down to the mirror section, and  click on a mirror to start the download
Download the UBCD and make the cd   <<==on a WORKING PC, and boot the problem PC from it
Here 2 links, one to the general site, and a direct link to the download

since the downloaded file is an ISO file, you need to use an ISO burning tool
if you don't have that software, install cdburnerXP :

If you want also the Ram tested - run memtest86+ at least 1 full pass,  - you should have NO errors!
For disk Diagnostics run the disk diag for your disk brand (eg seagate diag for seagate drive)  from the HDD section -  long or advanced diag !  (runs at least for30 minutes)                        ultimate boot cd             download page

**you never answered my post - did you try it??
obi wahn apologies i got interrupted..hopefully you have made some progress and were able to do individual ram tests.  If it has the same errors with either stick then i would guess mobo, but don't disregard the psu because if it doesn't have enough juice due to a faulty you will get erratic performance results all round.

My other advice at that time was to try and boot the pc using ram (stick at a time) in the 2nd memory bank (eg 1 chip at a time) to test your memory slot theory.  It it 'posts' and loads.. then maybe you have Id'd slot one as faulty. If you can plug in your HDD and VC then it may start and run.

How many machines do you have handy with the same spec, some or none. It is always a thing to place the ram in another pc to check its performance and stability.  Success would then point back to mobo or psu. if you took time to transfer the ram you could then test the HDD and VC all at once.  If it worked that would only leave 2 things psu or mobo

To do the psu check then swap psus, this might suk but is not as bad as reloading xp or waiting 2 hours for a "thorough" test of something.  That is why you never unload all of your spare pc parts..just keep a box of crap handy.

You are probably a long way down from this test, but the last PC i built would not post simply because 2 screws that earth the MOBO to the case were not tight enough and the graphics card was misaligned by a bees dik. .. $75 later my problems were solved.

You can bet your bottom dollar if its the mobo, you probably wont be able to get one quick enough, they will be twice the price of online... and undoubtedly there will be some incompatibility which will require you to spend more than you expected.  Thats how it works here in Dubbo.
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