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Windows 7: Encountering frequent 0x7a errors

27 May 2013   #1
JD Blue

Windows 7 Home Premium 64bit
 
 
Encountering frequent 0x7a errors

Hello everyone,

Beginning about a week ago I encountered a random BSOD and didn't think anything of it. Unfortunately they began to continue, increasing in frequency until as of this posting my laptop will not stay on for longer than 5 minutes in normal mode. (I get a more time in safe mode.)

The errors mainly include 0xf4 with the occasional 0x7a. Sometimes dumps are made but other times I get 0xf4 with a dump status 0xC0000010 and a 0x7a with a status 0xC000009C.

I have done some things to see if the error lies in my hardware. I have run memtest86+ ~7 or so times with no errors occurring. I have run chkdsk /f /r several times on C: to see if any bad sectors have appeared but that was also fruitless. I have checked to see if Windows Update has anything for me but it didn't. Outside of that I'm not sure what to do.

I have attached the SF Diagnostic Tool results in zip form.

Thanks,
JD


My System SpecsSystem Spec
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27 May 2013   #2
Pauly

Win7 Ultimate X64
 
 

Hello JD Blue, Welcome to SF

The two problems jumping out in your dumps are Driver Reference Table - WRkrn.sys & Driver Reference Table - tdx.sys
First one is AV related so may be worth trying to uninstall and run MSE as a test
Second one is a windows provided driver so i would run a SFC scan to check for any corrupt/missing files
SFC /SCANNOW Command - System File Checker

Although your AV would be my first suspect culprit
My System SpecsSystem Spec
29 May 2013   #3
JD Blue

Windows 7 Home Premium 64bit
 
 

Update:
I have uninstalled my AV and it seems to have fixed one of the issues. Unfortunately while running a scan with MSE my laptop crashed with the other issue.Now when I attempt to run it in any mode I get an 0xed error (repair mode does nothing).

I think I need to get my hands on a installation disc to repair this new error and while I'm at it fix the second driver issue above.

Do I need an installation disc with SP1 to repair windows with SP1? When I followed the steps to create my own disc (with only W7-HP-64b) it won't display a window after I select "repair my computer".
My System SpecsSystem Spec
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29 May 2013   #4
Pauly

Win7 Ultimate X64
 
 

How did you get on with sfc scan
My System SpecsSystem Spec
29 May 2013   #5
JD Blue

Windows 7 Home Premium 64bit
 
 

Didn't make any progress unfortunately. This new error happened before I could begin to tackle that solution.
My System SpecsSystem Spec
03 Jun 2013   #6
JD Blue

Windows 7 Home Premium 64bit
 
 

Update:

After a few days researching this new error 0xed I have run out of ideas. I cannot boot at all (normal, safe mode, safe mode with console, etc) without encountering it.

I have obtained a windows installation disk and created a repair disk on another PC but when booted from on my laptop they do not display the repair window. I tried these to see if I could to a chkdsk but they boot and display the blue windows background but never load the repair window (same happens if I try it from F8 options.)

I created a bootable cd with the MiniTool Partition Wizard in hopes that I could use its "Check File System" option to help but i can't make any head way in that regard either.

Where should I go from here?
My System SpecsSystem Spec
03 Jun 2013   #7
Pauly

Win7 Ultimate X64
 
 

Nice tutorial here listing lots of options/possibilities
Troubleshooting Windows 7 Failure to Boot
My System SpecsSystem Spec
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 Encountering frequent 0x7a errors




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