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Windows 7: BSOD ntoskrnl.exe +75bc0

12 Jun 2014   #1
SirComeStance1

Windows 7 Professional 64-bit
 
 
BSOD ntoskrnl.exe +75bc0

Hi,

For the past couple moths my computer has been bluescreening due to ntoskrnl.exe +75bc0.
It happens randomly sometimes when I'm playing a game other times when I'm watching youtube or a stream.

Any help would be appreciated.


My System SpecsSystem Spec
.
12 Jun 2014   #2
Thedoctor44

 

Code:
BugCheck A, {fffff68000109008, 0, 0, fffff80002da83b6}
This bugcheck means that pageable memory was referenced at an IRQL too high. This is an illegal operation as pageable memory can only be referenced at IRQL 1 (APC Level) or IRQL 0 (Passive Level).

So why doesn't the IRQL lower to access the memory address?

Windows doesn't work that way for good reason.
An Interrupt request (IRQ) has been initiated it is serviced in an order of priorities, for example an IRQ has been sent to service an I/O and an IRQ has been sent to draw a Window for an application, the disk I/O is more important so it is put at an IRQL higher than the application request. Right, so the I/O IRQ has to be completed before the IRQL can lower to service the IRQs below it.
Now, when something tries to access pageable memory at an IRQL higher than APC level it generates a page fault because the memory has been paged out to disk, now this page fault cannot be resolved by the trap handler because the IRQL is too high but the page fault needs servicing.

It then becomes a stalemate, you can't complete the page fault because the IRQL is too high but you cannot lower the IRQL because it needs servicing so the system bugchecks.

However, the strange thing I've noticed is this:

Code:
0000000000000000, IRQL
This IRQL wasn't too high,

Use Kaspersky's TDSSKiller Anti Rootkit utility

Anti-rootkit utility TDSSKiller

Uninstall these programs.

Code:
Start Menu\Programs\MotioninJoy	Public:Start Menu\Programs\MotioninJoy	Public
Code:
Start Menu\Programs\DAEMON Tools Lite	Public:Start Menu\Programs\DAEMON Tools Lite	Public
Find alternatives as they're caused quite a lot of issues.
My System SpecsSystem Spec
12 Jun 2014   #3
SirComeStance1

Windows 7 Professional 64-bit
 
 

Alright Thanks.
One question though were those two programs causing the IRQL to be too high?
And i ran TDSSKiller and it found nothing. Should i change the parameters on it?
My System SpecsSystem Spec
.

13 Jun 2014   #4
Thedoctor44

 

I don't know for sure, but given that those have caused a lot of issues it wouldn't surprise me.

Remove those programs and see how things pan out.
My System SpecsSystem Spec
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 BSOD ntoskrnl.exe +75bc0




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