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Hiya, This computer is locking up for around 5-30 seconds before throwing Blue Screen of Death's with 0x7A and occasionally 0xF4 errors. The log files don't really show anything informative, and Windows Update doesn't show any new drivers for the HDD. Upon restart, it shows a "A disk error has occurred /n Press Ctrl+Alt+Del to continue", and to fix this I go into WinRE via the pendrive and run "bootsect /nt60 C: /force /mbr" and that seems to fix it so it boots. And then the cycle repeats.

If you want any more information please ask.

Luke Carpenter

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You can use BlueScreenView to analyze the dumps and add the info to your post : – harrymc Aug 27 '10 at 13:07
Thanks very much for this tool, but I have no idea how to interpret the data that it shows me. UPDATE: Right-click, properties shows that it was caused by "ntoskrnl.exe" and "ntoskrnl.exe+70740" for where it happened. – lcarpenter Aug 27 '10 at 13:27
ntoskrnl.exe is part of the Windows kernal. – DMA57361 Aug 27 '10 at 13:33
Take screenshots from BlueScreenView for several aborts and add to your post, like the first image on the BlueScreenView site (and especially the lines in rose-color). Also double-click the .dmp and add a screenshot of the Properties. – harrymc Aug 27 '10 at 15:36

A STOP 0x7A is a KERNEL_DATA_INPAGE_ERROR, which roughly means that a page of kernel data was not found where it should be in the paging file and/or couldn't be loaded to memory.

A STOP 0xF4 is a CRITICAL_OBJECT_TERMINATION, which is much less useful but means a system critical process or thread has unexpectedly stopped.

So, you're potentially looking at hardware problems - maybe a dying hard drive, particularly given the message you get next boot. Check the SMART status of your drive, and for bad sectors, as soon as possible. Run chkdsk.

It could also be a RAM fault, so a memory scan is probably a good idea.

You may wish to refresh your backups before doing any of this.

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I don't have anything large enough to back up the 300-350GB of data on the spare partition. I have run chkdsk multiple times and it gives a clean bill of health every time. I took pictures of both errors, the F4 error has these in brackets: 0x(athousandzeroshere)3, 0xFFFFFAB002C01060, 0xFFFFFA8002C01340, 0xFFFFF80002D8B500 The 0x7A has 0xFFFFF6FC50020F78, 0xFFFFFFFFC0000185, 0x000000000EB19820, 0XFFFFF8A0041EFBF2. Thanks very much for your time, Luke – lcarpenter Aug 27 '10 at 13:24
@lcarpenter The 2nd value for 0x7a (0x...185) indicates STATUS_IO_DEVICE_ERROR - which means "improper termination, defective storage controller hardware, or defective disk cabling, or two devices attempting to use the same resources". Have you checked for loose connections inside the machine? I'm having difficulty finding the parameter info for 0xF4... – DMA57361 Aug 27 '10 at 13:30
@lcarpenter Do a memory check as well - it might be the RAM at fault. – DMA57361 Aug 27 '10 at 13:39
The system bluescreened again, however because I swapped to minidump's over kernel dumps it went too quickly, however it say "ntfs.sys" The system is stuck at a post-POST screen with "DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER" Ouch :( Luke – lcarpenter Aug 27 '10 at 13:43
@lcarpenter - Ah. Not good. If you're sure of the integrity of the drive (as it's already passed chkdsk, but try checking SMART as well if you get the opportunity) and since you're now getting issues here, then it looks like the issue is becoming more likely to be a faulty connection, a failing hard drive controller, or the motherboard. – DMA57361 Aug 27 '10 at 13:50

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