I had the same problem when I tried to connect 1 'SATA' & 1 'PATA' HDD in my system.
First time it work, I accessed all the Hardrives @ the same time but after two or three re-boot... My system got hanged & the same problem occured with Blue screen. because of tht I lost my 5.1 Inbuilt audio output.

==> The only solution for such problem is do not connect any such Hardware which is not supported by your motherbord...
==> secondly try to update Your system Drivers frequently.

I am getting this error msg too.
1st It can be because RAM isn't compatible with your Graphics card (yes thats possible) and all you need to do is to set the right voltage for RAM (if you manage to know to which value you must set it.)
2nd Drivers (for your graphics card Bet you have ati or nvidia)

3rd Here's link to an old tread it lists many possible thing you can do to stop it. http://www.ntcompatible.com/thread27803-1.html

READ CAREFULLY because not all errors are the same, so don't do something that you don't need to do. ex. Error IRQL_NOT_LESS_OR_EQUAL happens when trying to SHUT DOWN.

-Sorrow

Blue Screen/irql_Not_Less_Equal
Blue Screen - irql_not_less_or_equal

Hi Everyone.

I'm 36 don't know much on computers. My Moms bought me a Dell XPS 600 in late 2006. I hardly use it On Jan 8, 2008 At 5am. I got that blue screen less equal also. Maybe I need a update? A little help. Thanks. Mike.

-Anthony, Mike.

IRQL_NOT_LESS_OR_EQUAL problem
Blue Screen - irql_not_less_or_equal

I just got this new laptop, dell 1520 inspiron, got it yesterday, it had vista home installed and I tried upgrading to ultimate, at first I had hell but I googles and found I had to change from ahcp to ata, that was minor. Now the problem I'm haveing is I get the BSOD everytime I turn on the laptop, with IRQL_NOT_LESS_OR_EQUAL error, it then restarts and boots up and works ok. On the second boot it works like brand new, but the having to wait for a second boot isn't very entertaining, can someone help please?



-Charmz

Replying to Feedbacker

I got it too... And after looking through all this I found that "Bank 0" Temp. Is 120 degrees C... Bad RAM?

SiSoftware Sandra

System Chassis
Manufacturer : Dell Inc.
Type : Portable
Can be locked : No
Serial Number : JNWMBF1
Boot-up State : Safe
Power State : Safe
Thermal State : Safe
Security State : External Interface Locked-out

Mainboard
Platform Compliance : Intel Centrino Mobile Technology
Manufacturer : Dell Inc.
Multi-Processor (MP) Support : No
Model : 0KY768
Serial Number : .JNWMBF1.CN486437BG3442.

On-board Devices
NB8M-GS : Video Adapter (Enabled)
Sigmatel 9205 : Sound Adapter (Enabled)

System Memory Controller
Location : Mainboard
Error Correction Capability : None
Number of Memory Slots : 2
Maximum Installable Memory : 4GB
Bank 1 - DIMM_A : Samsung M4 70T2953EZ3-CE6 8317FD6A 450744 DIMM Synchronous DDR 1GB/64 @ 667MHz
Bank 2 - DIMM_B : Samsung M4 70T2953EZ3-CE6 8317FD7F 450744 DIMM Synchronous DDR 1GB/64 @ 667MHz

Chipset 1
Model : Dell Mobile PM965/GM965/GL960 Express Processor to DRAM Controller
Revision : A13
Bus : Intel AGTL+
Front Side Bus Speed : 4x 166MHz (664MHz)
Maximum FSB Speed : 4x 200MHz (800MHz)
Width : 64-bit
I/O Queue Depth : 12 request(s)
Maximum Bus Bandwidth : 5.19GB/s

Chipset 1 Hub Interface
Type : DMI (Direct Media Interface)
Version : 1.00
Number of Ports : 4
In/Out Width : 4-bit / 4-bit
Multiplier : 3/1x
Speed : 1x 100MHz (100MHz)

Logical/Chipset 1 Memory Banks
Bank 0 : 512MB DDR2 5.0-5-5-15 CR1
Bank 0 Temperature : 120.00�C
Bank 1 : 512MB DDR2 5.0-5-5-15 CR1
Bank 4 : 512MB DDR2 5.0-5-5-15 CR1
Bank 5 : 512MB DDR2 5.0-5-5-15 CR1
Maximum Installable Memory : 4GB
Supported Memory Types : DDR2
Channels : 2
Memory Bus Speed : 2x 332MHz (664MHz)
Maximum Memory Speed : 2x 333MHz (666MHz)
Multiplier : 2/1x
Width : 64-bit
Memory Controller in Processor : No
Performance Acceleration Technology : No
Refresh Rate : 7.80�s
Power Save Mode : No
Fixed Hole Present : No
Maximum Memory Bus Bandwidth : 10.38GB/s

APIC 1
Version : 2.00
Multiplier : 1/2x
Maximum Interrupts : 24
IRQ Handler Engaged : Yes
Enhanced Support : Yes

Memory Module 1
Manufacturer : Samsung
Model : M4 70T2953EZ3-CE6
Serial Number : 8317FD6A
Type : 1GB DDR2 SO-DIMM
Technology : 16x(64Mx8)
Speed : PC2-5300U DDR2-333
Standard Timings : 5.0-5-5-15
Version : 1.2
Date of Manufacture : April-14-08
Memory DC Line : 1.80V
Set Timing @ 333MHz : 5.0-5-5-15
Set Timing @ 267MHz : 4.0-4-4-12
Set Timing @ 200MHz : 3.0-3-3-9

Memory Module 2
Manufacturer : Samsung
Model : M4 70T2953EZ3-CE6
Serial Number : 8317FD7F
Type : 1GB DDR2 SO-DIMM
Technology : 16x(64Mx8)
Speed : PC2-5300U DDR2-333
Standard Timings : 5.0-5-5-15
Version : 1.2
Date of Manufacture : April-14-08
Memory DC Line : 1.80V
Set Timing @ 333MHz : 5.0-5-5-15
Set Timing @ 267MHz : 4.0-4-4-12
Set Timing @ 200MHz : 3.0-3-3-9

Environment Monitor 1
Model : Intel Core CPU [P1, C2, M1]
Version : 15.13
Mainboard Specific Support : No

Temperature Sensor(s)
CPU Temperature : 45.00�C td

PCI Bus(es) on Hub 1
Version : 2.30
Number of Bridges : 5
PCI Bus 0 : PCI (1/1x PCIClk)
PCI Bus 1 : PCIe (3/1x PCIClk)
PCI Bus 3 : PCI (1/1x PCIClk)
PCI Bus 11 : PCIe (3/1x PCIClk)
PCI Bus 12 : PCIe (3/1x PCIClk)
PCI Bus 13 : PCIe (3/1x PCIClk)
Number of PCIe Lanes : 19

LPC Hub Controller 1
Model : Dell ICH8M-E (ICH8 Family) LPC Interface Controller
Revision : A3
ACPI Power Management Enabled : Yes
Advanced TCO Mode Support : Yes
Advanced TCO Mode Enabled : No
High Precision Timer Enabled : Yes
Number of Precision Timers : 3
System Timer : 14.32MHz
Delayed Transaction Enabled : Yes

LPC Hub Controller 2
Model : Dell 82801H (ICH8 Family) SMBus Controller
Revision : A3

LPC Legacy Controller 1
Type : SMSC LPC v1
Version : 32.01
Number of Enabled Devices : 5

USB Controller 1
Model : Dell 82801H (ICH8 Family) USB UHCI #4
Revision : A3
Version : 1.10
Interface : UHCI
Channels : 2
Speed : 48MHz
Supported Speed(s) : Low (1.5Mbps) Full (12Mbps)
Legacy Emulation Enabled : No

USB Controller 2
Model : Dell 82801H (ICH8 Family) USB UHCI #5
Revision : A3
Version : 1.10
Interface : UHCI
Channels : 2
Speed : 48MHz
Supported Speed(s) : Low (1.5Mbps) Full (12Mbps)
Legacy Emulation Enabled : No

USB Controller 3
Model : Dell 82801H (ICH8 Family) USB2 EHCI #2
Revision : A3
Version : 2.00
Specification : 1.00
Interface : EHCI
Channels : 4
Companion Controllers : 2
Supported Speed(s) : Low (1.5Mbps) Full (12Mbps) High (480Mbps)
Addressing Support : 64-bit
Legacy Emulation Enabled : No

USB Controller 4
Model : Dell 82801H (ICH8 Family) USB UHCI #1
Revision : A3
Version : 1.10
Interface : UHCI
Channels : 2
Speed : 48MHz
Supported Speed(s) : Low (1.5Mbps) Full (12Mbps)
Legacy Emulation Enabled : No

USB Controller 5
Model : Dell 82801H (ICH8 Family) USB UHCI #2
Revision : A3
Version : 1.10
Interface : UHCI
Channels : 2
Speed : 48MHz
Supported Speed(s) : Low (1.5Mbps) Full (12Mbps)
Legacy Emulation Enabled : No

USB Controller 6
Model : Dell 82801H (ICH8 Family) USB UHCI #3
Revision : A3
Version : 1.10
Interface : UHCI
Channels : 2
Speed : 48MHz
Supported Speed(s) : Low (1.5Mbps) Full (12Mbps)
Legacy Emulation Enabled : No

USB Controller 7
Model : Dell 82801H (ICH8 Family) USB2 EHCI #1
Revision : A3
Version : 2.00
Specification : 1.00
Interface : EHCI
Channels : 6
Companion Controllers : 3
Supported Speed(s) : Low (1.5Mbps) Full (12Mbps) High (480Mbps)
Addressing Support : 64-bit
Legacy Emulation Enabled : No

FireWire/1394 Controller 1
Model : Dell R5C832 IEEE-1394 Controller
Revision : A6
Version : 1.10
Interface : OHCI
Enhanced Support : Yes
Channels : 64
Speed : 400MHz

System SMBus Controller 1
Model : Intel 801xx/63xx SMBus
Version : 0.02
Specification : 2.00
Advanced TCO Mode Enabled : Yes
Slave Device Enabled : Yes
PEC Support : Yes
Speed : 100kHz

Port Connector(s)
USB : USB / USB
MONITOR : Video / DB-15 pin female
FireWire : FireWire/1394
Modem : Modem / RJ-11
Ethernet : Network / RJ-45

Performance Tips
Notice 224 : SMBIOS/DMI information may be inaccurate.
Warning 2507 : Mainboard has too few memory slots. Upgrading the memory may be difficult or expensive.
Warning 2508 : All memory slots are full. Upgrading the memory may be difficult or expensive.
Tip 2 : Double-click tip or press Enter while a tip is selected for more information about the tip.


-reply by shaun

I have had my share of IRQL_NOT_LESS_OR_EQUAL stop messages as well. After complete dis-assembling and part by part assembling, I could pin-point the culprit to be the newly installed memory module. I was aware of the incompatibility of modules with different clock frequencies, so I bought one that matched the existing one. Yet both of them would just not work together. The Stop error used to show up after 4-5 minutes of strenuous activity such as file compression. Although, games didn't trigger this.

Both of those RAM chips worked fine when used alone, but together they just seemed incompatible. Surprisingly, the chips are working fine when used in single channel mode.

I had the same Error as all you guys.

I just removed a stick of ram and bam it worked. Put the chip back in, didn't work. Tried the same set of actions several more times with the same results. I was at the point where I couldn't even get past welcome screen before BSOD came up. I was also getting a Memory_Management BSOD when I was shutting down (long before I was unable to start.)

-reply by eman

For some reason even compatible RAM chips (compatible in the sense of Bus Speed) manufactured by different companies seem to cause this trouble. Recently, I got myself a new 512 MB DDR PC 400 module and it worked like a breeze when I used it along with the existing pairs. The manufacturers have got to look at things such as this. I don't if this problem exists internationaly. Quite a few of my friends here in India have reported the same problem.

IRQL_NOT_LESS_OR_EQUAL ,while installing winxp
Blue Screen - irql_not_less_or_equal

Friends,
I have assembled my new pc with the following configuration
Intel 3 ghz,intel DG33 mother board,2GB(800mhz)RAM.When I install the xp I get the IRQL_NOT_LESS_OR_EQUAL error.I get this eror during the "installing driver" screen comes even I install with very minium configuration.I connect other HDD which in which the xp installed already,first it boots up fine but when it fined new hard ware and prompt for reboot,when I reboot the pc I face the same IRQL_NOT_LESS_OR_EQUAL problem..
Thanks in advance

-reply by BHARAT

Replying to FeedbackerI have this same issue with a DG33 board, I am running a core 2 duo 2.2 and it works great with 1 gig of 800 but everytime I add another gig I get the IRQL error, take it back out and the system stablizes. I have a total of 4 gigs (exact same part #) and can put anyone of them in by themselves and it will run fine, try to add more and it errors out every 15 to 20 minutes with no explaination. I have a systems montitoring tool and all temps are below normal except the ICH temp wich stays aroun 80 with a max of 91. I might try adding another case fan to see if it helps!

-reply by altrim