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Irql not less or equal error while playing games

I sometimes (once every couple of days) get a irql not less or equal error while playing direct 3d games.

Is it possible this is due to one 7800gtx 512 (I have two such sli cards) sharing irq number 16 with the audio card x-fi audio?
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Daniele Brunengo
Asked:
Daniele Brunengo
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2 Solutions
 
Darwinian999Commented:
Sharing an IRQ shouldn't be a problem. The first thing I'd do is check for updated drivers / BIOS for the Video Cards, audio card and motherboard.
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Daniele BrunengoIT Consultant, Web DesignerAuthor Commented:
The drivers/bios are all updated to the latest versions.
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mr_egyptianCommented:
Download memtest86+:
http://www.memtest.org/
Bad memory can sometimes cause this.
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cpc2004Commented:
Your RAM is good but it must be compatible to your motherboard.

The crash may be caused by faulty ram or device driver error (ie video, sound card, modem and etc). The system event log and the minidump has the most useful diagnostic information. When Windows crashes with blue screen, it writes a system event 1001 or 1003 and a minidump to the folder \windows\minidump. Check system event 1001 and 1003 and it has the detail of the blue screen.

Event ID: 1001
Source: Save Dump
Description:
The computer has rebooted from a bugcheck.The bugcheck was : 0xc000000a (0xe1270188, 0x00000002, 0x00000000, 0x804032100).
Microsoft Windows..... A dump was saved in: .......

Event Source: System Error
Event Category: (102)
Event ID: 1003
Description:
Error code 1000007f, parameter1 0000000d, parameter2 00000000, parameter3 00000000, parameter4 00000000

Control Panel -> Adminstrative Tools -> Event Viewer -> System -> Event 1001/1003. Copy the content and paste it back here

Zip 5 to 6 minidumps to a zip file and attach it at any webspace. I will study the dump and find out the culprit. If you can't provide the minidumps, run memtest to stress test the ram. Make sure that your windows is not infected with spyware, adware adn chkdsk /r.
http://www.memtest86.com/.

Get public webspace
Use a free service like rapidshare to attach the minidumps and post the url of the mimidumps at this thread.
http://www.rapidshare.de/
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ISoulCommented:
Those games you play... do they happen to be online games?
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Daniele BrunengoIT Consultant, Web DesignerAuthor Commented:
No the ram is good and there's no spyware or virus I keep my pc as clean as I can.
No they're not online games.

Strangely when I get this blue screen it leaves no 1003 Id just 1001:

it's in italian but it shouldn't be a big problem

Il computer è stato riavviato da un controllo errori. Il controllo errori era: 0x1000000a (0xfffffffc, 0x0000001c, 0x00000000, 0x8050169b). È stata salvata un'immagine della memoria in: C:\WINDOWS\Minidump\Mini051406-01.dmp.

I have uploaded 3 minidumps:
www.matefisica.it/minidump.zip

Only the two most recent dumps relate to this error, there is another oldest dump relating to an error I used to get when I had an inadequate power source. That problem was recurring then I changed p/s and it went away. This new problem doesn't happen each time I play, only once in a while.
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cpc2004Commented:
0x1000000a (0xfffffffc, 0x0000001c, 0x00000000, 0x8050169b).  Your windows is crashed at timer IRQL (ie 0x0000001c) and this is the sign of hardware error. I have 24 confirmed cases of crashing at IRQL x'1c'. 10 cases are faulty ram and 6 cases are faulty CPU, 3 cases are M/B, 2 cases are PSU and 1 case is overheat.  66.6% is faulty ram or CPU.

Run memtest to stress test the ram.
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Daniele BrunengoIT Consultant, Web DesignerAuthor Commented:
I ran memtest for 6 times in a row, about 3 hours, I got an error in test 3 but only on the first run. Test 3 went fine the other six times. Does this mean that the ram is faulty anyway?

Now I'll test it with goldmemory which I think is more accurate than memtest (once memtest passed as good a bank of faulty ram which goldmemory nailed right away).
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Daniele BrunengoIT Consultant, Web DesignerAuthor Commented:
Sorry I meant test 3 went fine the other five times except the first.
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Daniele BrunengoIT Consultant, Web DesignerAuthor Commented:
I ran goldmemory for 5 hours and it found 2 errors and it seems it just freezed after 3 hours, so I guess it should be ram...
Now I will try separately testing the ram banks.
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cpc2004Commented:
According to your test result, I believe that ram is the culprit.
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Daniele BrunengoIT Consultant, Web DesignerAuthor Commented:
All right after 20 hours of test I can safely say that one bank of ram is faulty and the other is good. Before closing the question I want to make sure this caused the error though, so I'll wait for tomorrow when the new bank arrives and make a few tests, then I'll close it if all's good.
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mr_egyptianCommented:
Glad you figured it out. When I was working as a tech/consultant, this error was ~75% bad memory. FYI, the link I posted to memtest86+ was taken over from the memtest86 group, and is (a little bit) more maintained.
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Daniele BrunengoIT Consultant, Web DesignerAuthor Commented:
I think it was ram, I haven't played many games lately but I didn't get the error any more. So I can close the question, thanks to all you guys.
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