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Windows 7: BSOD started yesterday ataport.sys?

17 Dec 2014   #1

W& Ultimate
BSOD started yesterday ataport.sys?

windows 7 Ultimate (32 bit) intel core two duo E6400 4 GB ram fully updated.

this started yesterday, woke up to find the machine at this BSOD, restarted in safe-mode as i was prompted that windows had not shut down correctly, rebooted, ran without issue all day.
Woke up this a.m. to the same BSOD
Ran sfc /scanow and found no issues. have not installed an new hardware in the last 2 years, only real software update was a program called teamviewer that i use to remotely help family members with their systems but that was 4 days or so prior to this starting.
zip attached.
Edit to add: After the original post, the same BSOD is present every day when i wake up. This happens sometime between 3 a.m. when i last use the system and 8:30 a.m. whe i get up to walk the dogs.

My System SpecsSystem Spec
19 Dec 2014   #2

Microsoft Community Contributor Award Recipient

Windows 10 Home 64Bit


 Clean boot
Reduce items at start-up. No software except anti-virus is required plus doing this improves the time for logging into windows:
Run the System File Checker that scans the of all protected Windows 7 system files and replaces incorrect corrupted, changed/modified, or damaged versions with the correct versions if possible:
  • Click on the
  • Type CMD on Search
  • Left click and Run as Administrator
  • Type SFC /scannow
Full tutorial here:
Run Disk Check on your Hard Drive for file system errors and bad sectors on it.

 Hard Drive Diagnostics

  • Double click and open my computer.
  • Right click on desired drive and hit properties.
  • Click on tools tab and Check now.

Read complete instructions on the tutorial: Disk Check

Other Tests:

Take memtest. Run for 8 passes and test each stick in a know good slot for an additional 6 passes.
The goal is to test all the RAM sticks and all the motherboard slots.

Check your motherboard manual to ensure the RAM sticks are in the recommended motherboard slots. Some motherboards have very specific slots required for the number of RAM sticks installed.

If you get errors, stop the test and continue with the next step.

1. Remove all but one stick of RAM from your computer (this will be RAM stick #1), and run Memtest86 again, for 7 passes.
*Be sure to note the RAM stick, use a piece of tape with a number, and note the motherboard slot.
If this stick passes the test then go to step #3.

2. If RAM stick #1 has errors, repeat the test with RAM stick #2 in the same motherboard slot.
*If RAM stick #2 passes, this indicates that RAM stick #1 may be bad. If you want to be absolutely sure, re-test RAM stick #1 in another known good slot.
*If RAM stick #2 has errors, this indicates another possible bad RAM stick, a possible motherboard slot failure or inadequate settings.
3. Test the next stick of RAM (stick #2) in the next motherboard slot.
*If this RAM stick has errors repeat step #2 using a known good stick if possible, or another stick.
*If this RAM stick has no errors and both sticks failed in slot#1, test RAM stick #1 in this slot.
4. If you find a stick that passes the test, test it in all the other motherboard slots.

If Part 2 testing shows errors, and all tests in Part 3 show errors, you will need to test the RAM sticks in another computer and/or test other RAM in your computer to identify the problem.

In this way, you can identify whether it is a bad stick of RAM, a bad motherboard, or incompatibility between the sticks.
information   Information
Errors are sometimes found after 8 passes.

Tip   Tip
Memtest should be done overnight.
My System SpecsSystem Spec
21 Dec 2014   #3

W& Ultimate

Reduced start-up items to only anti virus
Ran SFC /scannow : No issues:

Ran CHKDSK and looked it up in event viewer:

Checking file system on C:
The type of the file system is NTFS.

A disk check has been scheduled.
Windows will now check the disk.

CHKDSK is verifying files (stage 1 of 5)...
Cleaning up instance tags for file 0x11d0e.
396800 file records processed. File verification completed.
1549 large file records processed. 0 bad file records processed. 2 EA records processed. 83 reparse records processed. CHKDSK is verifying indexes (stage 2 of 5)...
479770 index entries processed. Index verification completed.
0 unindexed files scanned. 0 unindexed files recovered. CHKDSK is verifying security descriptors (stage 3 of 5)...
396800 file SDs/SIDs processed. Cleaning up 1872 unused index entries from index $SII of file 0x9.
Cleaning up 1872 unused index entries from index $SDH of file 0x9.
Cleaning up 1872 unused security descriptors.
Security descriptor verification completed.
41486 data files processed. CHKDSK is verifying Usn Journal...
37257704 USN bytes processed. Usn Journal verification completed.
CHKDSK is verifying file data (stage 4 of 5)...
396784 files processed. File data verification completed.
CHKDSK is verifying free space (stage 5 of 5)...
14195023 free clusters processed. Free space verification is complete.
CHKDSK discovered free space marked as allocated in the
master file table (MFT) bitmap.
CHKDSK discovered free space marked as allocated in the volume bitmap.
Windows has made corrections to the file system.

312466431 KB total disk space.
255038516 KB in 259046 files.
134816 KB in 41487 indexes.
0 KB in bad sectors.
513003 KB in use by the system.
65536 KB occupied by the log file.
56780096 KB available on disk.

4096 bytes in each allocation unit.
78116607 total allocation units on disk.
14195024 allocation units available on disk.

Internal Info:
00 0e 06 00 ff 95 04 00 3d d8 07 00 00 00 00 00 ........=.......
2e a1 00 00 53 00 00 00 00 00 00 00 00 00 00 00 ....S...........
c8 93 45 00 50 01 44 00 e8 20 44 00 00 00 44 00 ..E.P.D.. D...D.

Windows has finished checking your disk.
Please wait while your computer restarts.

Crystal Disk Info:

Ran all test in Seatools , all passed.

As of the last two days, the system has NOT BSOD'd

Having issue getting memtest to load at boot
hangs at LOADING.......................( posted to their forum regarding that)
But it appears that the issue was something either that was repaired by CHKDSK or was in the startup.
ANy clues form the original BSOD?
My System SpecsSystem Spec

22 Dec 2014   #4

Microsoft Community Contributor Award Recipient

Windows 10 Home 64Bit

Thanks for the update.

Any BSOD's after the changes?
My System SpecsSystem Spec
22 Dec 2014   #5

W& Ultimate

No BSOD's..three days now, where it was getting one every morning at approximately the same time.
My System SpecsSystem Spec

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