Bsod irql_not_less_or_equal

Ok this will be difficult when you can't run the computer. firs I would like your system specs in as much detail as possible complete with Manufacturer and model numbers, if possible. Please include the PSU, what CPU Cooler and what peripherals you have connected other than mouse and Keyboard.

Please fill out your System Specs

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Your System Specs will help us to help you, and doing it in this manner will make them available to all helpers in every post and keep us from hunting for them. We ask that you fill them out in as much detail as possible including Desktop or Laptop, Model number if it is an OEM computer and all components with the Manufacturer and Model number if possible.

If you will go to your last post and click the 'System Specs' in the bottom left of the post, you will find a link to update your system specs. Please fill those out in as much detail as possible, making sure to click save at the bottom of the page. If you would like to know what we would like, you can click 'My System Specs' at the bottom left of this post to see mine. If you do not know what your components are, this will help you accomplish this task. System Info - See Your System Specs

Next, boot the computer and go into bios and tell me temps of the CPU, motherboard and any other temps you show and voltages for the +12V, +5V and +3.3V. Also just sit in BIOS and tell me if it runs OK or if it shuts down there. Just let it sit there for a while and see if it shuts down like it does in the OS.

Ok, good. I know it is boring, but if you can let it run as long as you can in Bios. The reason is, all the hardware is working in BIOS but none of the OS is. If you BSOD in BIOS it is pretty likely you have a Hardware problem. If it does not, then we know it is most likely a software or driver issue, or possibly a hard drive problem. That is what we need to determine first. Are we looking at hardware or software. It is not absolute proof it isn't hardware because there is little strain on the hardware in BIOS, but it does give us a good indication. I just want you to know why I aske you to do certain things. There is a purpose for most everything I ask you to do. I don't ask you to do anything that there is no reason for. Some of the things we ask seem like a real PITA, but trust me I wouldn't ask you to do that if I didn't have a reason for it, and I have been there myself many many times and did exactly what I'm asking you to do. So, yes I know what a pain it is, been there, done that.

No, that's fine, see if you can reboot. If not run startup repair at least 3 times with attempted reboots in between. System Recovery Options

before that try a system restore if you have a restore point from before when you started having this problem System Restore

OK. I would like to make sure you don't have hardware problems first. We can run a few tests , but we're limited if you can't boot into Windows, So, Please run the hard drive tests I linked to and run Memtest86 to test your ram. It is long and boring, but the best test we have for ram, which can mess everything else up.

Please Run Memtest86+

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Please download from this site only http://www.memtest.org/ in the middle of the page are the Download links, you can download the ISO.zip or the Auto USB Flash Drive installer.zip

Extract the Zip file. If you chose the ISO image, burn it to a CD using Windows Disk Image Burner or any Image burner you may have. If you downloaded the Auto USB installer, extract it, insert your USB 2.0 Flash Drive and take note of the drive letter. Run the installer, select the Flash Drive Letter, check the format box and press next. It will install memtest86+ to a flash drive. You can use either V4.20 or V5.01. Boot from your selected media. If you use V5.01 it will tell you to press certain buttons at the start, please press no buttons. The test will begin on it's own and continue to run until you stop it. It needs to run for 8 complete passes or until you receive an error. If you receive an error, stop the test. Even 1 error is a fail. Each pass tests a different part of the ram and each of the 10 tests in each pass tests something different. It takes a minimum of 8 passes to completely test the ram, more passes are better. It is quite a long test and will take several hours depending on how much ram you have. Due to the time length it is best to run overnight. If you have any questions, please do not hesitate to ask

After that, your options are limited. Either try a repair install or the best bet is a Clean install. A repair install is about the last option before a clean install. Personally, I would do a clean install, but I will leave it up to you. It's your choice, just let me know what you want to do, so I can give you some instructions to get it right the first time. I am honestly concerned about your board. There is no reason for all of the USB problems if all the drivers have been installed, and installed right. The only other option is a bad board.

A repair install, you shouldn't lose anything, but I would make sure to back up all of your personal files anyway. Things do happen. Plus you should be doing that anyway. a repair install is an install that tries to correct any errors in system files. Some are more successful than others. It may just depend on what exactly is wrong.

A clean install, yes, you will lose everything. It is a completely new install and will overwrite everything. A clean install is the best method to solve problems. It is not the nightmare you have always heard about if you plan for it and prepare for it. I do them pretty regularly. I can tell you how to do either one if you want to try it.