Random BSODs, DRIVER_IRQI_NOT_LESS_OR_EQUAL / PFN_LIST_CORRUPT.

It okay, I'll try to help. If needed I'll call my friends for input :)

Upload a screenshot of your hard disk using CrystalDiskInfo:

• CrystalDiskInfo - Software - Crystal Dew World
• Screenshots and Files - Upload and Post in Seven Forums

Make a hard drive test from the hard drive manufacturers website:

• Hard Drive Diagnostic Procedure

Run Disk Check on your hard disk for file system errors and bad sectors on it:

• Disk Check

Take memtest. Run for 8 passes and test each stick in a know good slot for an additional 6 passes.

• RAM - Test with Memtest86+

The goal is to test all the RAM sticks and all the motherboard slots.

Check your motherboard manual to ensure the RAM sticks are in the recommended motherboard slots. Some motherboards have very specific slots required for the number of RAM sticks installed.

If you get errors, stop the test and continue with the next step.

1. Remove all but one stick of RAM from your computer (this will be RAM stick #1), and run Memtest86 again, for 7 passes.

*Be sure to note the RAM stick, use a piece of tape with a number, and note the motherboard slot.

If this stick passes the test then go to step #3.

2. If RAM stick #1 has errors, repeat the test with RAM stick #2 in the same motherboard slot.

*If RAM stick #2 passes, this indicates that RAM stick #1 may be bad. If you want to be absolutely sure, re-test RAM stick #1 in another known good slot.

*If RAM stick #2 has errors, this indicates another possible bad RAM stick, a possible motherboard slot failure or inadequate settings.

3. Test the next stick of RAM (stick #2) in the next motherboard slot.

*If this RAM stick has errors repeat step #2 using a known good stick if possible, or another stick.

*If this RAM stick has no errors and both sticks failed in slot#1, test RAM stick #1 in this slot.

4. If you find a stick that passes the test, test it in all the other motherboard slots.

If Part 2 testing shows errors, and all tests in Part 3 show errors, you will need to test the RAM sticks in another computer and/or test other RAM in your computer to identify the problem.

In this way, you can identify whether it is a bad stick of RAM, a bad motherboard, or incompatibility between the sticks.

   Information

Errors are sometimes found after 8 passes.

   Tip

Do this test overnight, before going to bed.

Here's a PDF for WD life guard:
http://www.wdc.com/wdproducts/librar...779-701022.pdf
I'll request a friend to guide you with RAM test.

kiwibadboy said:

1. I can't seem to figure out how to take a picture of the hard disk. Is there a tutorial for it? Because you guys seem to have a tutorial for everything lol

2. The System Info program (by Seven Forums) says my motherboard is by WD, I'm guessing it's western digital. But I can't find how to do a hard drive test from their website.......

3. I've already done Disk check, and nothing wrong was detected.

4. I'm kind of hesitant to open up the case, I'm more of the software-liking guy. Is it safe to play with the motherboard and switch the sticks around? Or should I leave it to a professional.

Wow, how negative is that? I'll totally understand if you want to stop here, because you've already helped me a lot :)

1. Screenshots and Files - Upload and Post in Seven Forums

2. 7 Free Hard Drive Testing Software Tools

3. Try the HDD tests as well.

4. Power down the PC, leave the plug in the wall. Open the case and swap the RAM sticks, make sure you touch a metal part of the case to discharge static. There is a clip on each side for each RAM slot, push them bot down and the stick will pop free, don't touch the gold pins.
Put them back in the slots noting where the slot in the RAM is, it goes in only one way, push each end itno the slot until you hear a click, re-engaging the clips.