IRQL NOT LESS OR EQUAL BSOD

Go to system, hardware, device manager, view- list by resource connections and see how many devices lovely Mr.ACPI has put on the same IRQ

If you have a creative soundcard and it's sharing an IRQ, this will generally be the source of the problem :S If not, then it could be any number of things - most notably a faulty RAM module...

It would help if you wrote down ALL of what it said onthe BSOD, as that may give some clue as to what it is that's going wrong

On another note - are you meant to have ECC memory sticks withthe AMD64's?

AMD 939 here, same prob, this fixed it

IRQL_NOT_LESS_THAN_EQUAL, BSOD fix

Quote:
Originally Posted by NecessaryEvil
Does this fix the Unreal Engine + A64 blue screen on exit?

I was able to fix mine by heeding some advice on another forum. WinXP's Sp2 activated the NX bit in the Athlon 64 series of cpus. It's a hardware feature that helps prevent buffer overflows. It would happen to me during Tribes Vengeance or UT2K4 while exiting or minimizing. The error would read "irq_less_than_equal_my_ass" and lead me to believe my overclocked desires weren't getting along with my hardware. Here's the fix...

1. Open up the Control Panel.
2. Click on the System Icon.
3. Click on the Advanced tab.
4. Under Startup and Recovery, click on the Settings button.
5. Under System startup, click on the Edit button.

This will open up a notepad which should have something similar to this:

[boot loader]
timeout=0
default=multi(0)disk(0)rdisk(0)part ition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1) \WINDOWS="Microsoft Windows XP Professional" /fastdetect /noexecute=OptIn

6. Change the "/noexecute=Optin" switch to "/execute=Optin"
7. Reboot.

I am happy to say, I haven't had a bsod upon exiting an Unreal Engine based game in a couple of weeks now.

Cheers,

Jod ;-)

Blatant c&p from [H]ard|Forum

I had a similar issue. I had a stable system but there were a few issues that I wanted rid of, so I formatted. Installed XP SP2, as it had before.
All went fine, but I started to get blue sceens IRQL_NOT_LESS_THAN_EQUAL, during UT games, after closing down UT2k4, and occasionally randomly.
Been pulling what little hair I had our, till I tried this solution, low and behold it works

Specs:
ath 64 3500 (939)(130nm)
Asus AV8 Deluxe
1 gig corsair XMS PC3200
6800GT Golden Sample
Antec Neopower 480w


Ty Kalvin976

Originally I didn't have this problem, but then i got another hard drive and decided to raid 0 it with the one I already had installed, and then when I reinstalled xp sp2 and UT and played it I got this error too when exiting the game. I have Ath 64 but not the 939 mobo. The solution also worked for me too so thanks Kalvin976. The other thing that seems to be common is the graphics card? When i got the BSOD it was with the latest driver 66.93, where the original install where i had no problem was 61.77. Dunno if this contributed to the BSOD.

Specs:
ath 64 3000+
Asus K8N-e Deluxe
1 gig PC3200
6800

IIRC, the issue effects Nvidia cards running any driver after 65.xx.

My FX5700 Ultra and Santa Cruz shouldn't be sharing IRQ 16 should they? Would explain my terrible instability issues.