Random crashes BSOD, dump file won't zip

There aren't any symbols/warnings in device manager.

Like I said earlier, I actually don't have a C media sound card. My sound card is Diamond Multimedia extreme sound, but their website was down for a few days when I reinstalled my OS, and Windows 7 seem to find another driver from C media that seemed to work. But, after you mentioned the error message related to it, I went and downloaded and installed the latest diamond multimedia driver for my sound card since their website is back online. I'm not sure why you're still seeing an error message with C media, maybe I need to uninstall that, you think?

I don't think sfc/scannow found any errors to fix.

I would uninstall the C media driver then install the one from your manufacturer's website.

PC crashed again today. For some reason it didn't make a dump file. I can see the last dump file was dated 6/3 - six days ago. Once again the Event Viewer under System says "The driver detected a controller error on \Device\Ide\IdePort4". Source: atapi. And again it repeats that error over and over again (29 times) right before it crashed.

I know that has something to do with my PC crashing - it has to since I always see that in Event Viewer right before my crashes. This time I had my Toshiba external hard drive plugged in when it crashed. TheDoctor44 asked earlier in this post if any of my devices were USB 3, and this is the one device I have that has blue in the connector so it probably is USB 3 - if that could be causing an issue.

I'm starting to think this external hard drive might have something to do with my crashes because this time I had it plugged in when it crashed and last time i had unplugged it shortly before it crashed. After my crashes I usually have trouble getting Windows to boot back up. I often try to do a boot repair and it usually won't work. I go into "detail" to see what it can tell me and it says that it detects no hard drive or the hard drive is not responding.

Sometimes, this time included, I get an error message telling me that if I recently plugged in a device like a camera or music player to unplug it now and restart the computer. This time I actually had something plugged in (the external hard drive) but usually I don't. I'm starting to think my external hard drive which is USB 3 could be conflicting with my hard drive and causing it to stop responding or something. Could this controller error on IdePort4 have something to do with my external hard drive? Could IdePort4 be the USB port where I plug in my external hard drive on the front of my PC?

Download CrystalDiskInfo.
run it then post a screenshot of your drives in the application.

here it is:

Sorry my bad, I forgot we already looked at the drive with CrystalDiskInfo earlier I have to say... I'm starting to run out of ideas now.
Any other dump files?

Yes here's another dump file. My computer crashed several times in a row today. Crashes are occurring more frequently. At one point it even said that it couldn't find my OS on the disk. At one point start up had issues, and while doing a chkdsk it crashed again. At one point it said something about my system files - some problem with that. But, i think all of these problems were caused by the crashes. I'm not sure if I got those issues taken care of or not. After that I finally managed to get back on here in safe mode. I just did a sfc/scannow and it didn't find anything, but I'm going to do another chkdsk after this and follow that up with the sfc/scannow again.

I'm pretty sure I'm close to having to reinstall the OS again if it keeps getting worse like this. You said you thought the problem might be driver related - Do you think it would help if I started uninstalling as many of my programs as I can? Maybe one of them is causing my computer to crash.

Also, I have the memtest on disk now. I ran it yesterday - 2 passes and it didn't find any problems with my RAM. But, I can see it will take at least 12 hours to do 11 passes, so I was planning on doing that tonight, overnight. As long as my computer will let me.

Anyway, here's my latest dump file - sure hope it says something useful:

https://www.dropbox.com/s/ubkazny0qlilwnj/MEMORY.DMP

Have you ran a System File Checker?

If not then...

   Information

Go into an Elevated Command Prompt (Run as administrator) and type in sfc /scannow
If it finds errors reboot and run the scan two more times

It might be but it appears your HDD is healthy and you keep getting serious errors that say it cannot find your OS on the disk. It looks like either bad OS corruption or a bad drive, despite the tests.

Let me know how that goes, I personally would try an OS clean install which I don't recommend to many people unless it gets bad.

I did run the sfc/scannow from an elevated command prompt, and it didn't find anything. I suppose it could be a bad hard drive, but I just seriously doubt it because I bought this hard drive maybe a year ago. And the reason I did so was because I was facing the same issue then (random crashes) as I am now and I thought my hard drive was bad. Like wise, I have done a clean install 3 or 4 times now, and every time I start having these issues. I've actually been on this forum once before and couple of other guys tried to help me figure this issue out, and they also weren't able to figure it out in time - it eventually got so bad I had to reinstall the OS. But, the computer does seem like it runs better when I first reinstall the OS, and over time the crashes become more and more frequent. Maybe I need to update the drivers for my motherboard or something.