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Solved What Could be Wrong With my PC?

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Modder v7

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Hello all.

So, for the past couple of months, I've been having a number of problems with this PC:
1) BSODs (IRQL_NOT_LESS_OR_EQUAL)
2) Random freezing with loss of mouse and keyboard support (shut down required to break out of it)
3) Failure to boot/boot loop cycle after a system crash and shutdown (turns on, beeps once, shuts down, repeats until forcibly shut down by holding power for 10 seconds)

Here's the system specs (Alienware x51 R2, mini-ITX form factor):
-Haswell LGA1150 mobo
-Intel i7 4770 3.2Ghz CPU
-Nvidia GeForce GTX 760 Ti OeM GPU w/ 2GB vRAM
-2x 8GB DDR3 1600 Mhz RAM
-WD 1TB HDD
-No SSD
-330W External Power Adapter

What I have tried:
-Replacing the video card
-Reseatting RAM
-uninstalling/reinstalling video drivers
-replacing the power adapter
-cleaning it out with compressed air
-reinstalling the OS

I'm running out of ideas here. I took it to a repair shop a couple of times already. It would be fixed for about three months and then the same problems would re-occur. I am going to open the case myself and see what I can find. As of now, I've only been attacking this problem from the software level. What else should I try or what do you think might be the cause? I've talked to a lot of people and suggest it is one of these:
1) Mobo is dying
2) RAM needs to be re-seatted/replaced
3) Reset BIOS
4) Get a GPU that uses less wattage (AMD x470)
5) Change power brick (didn't work; still froze)
6) Replace the HDD (says it might be corrupted)

Stuff that was installed:
-Source Filmmaker
-Steam
-Watch Dogs
-UPlay
-Nvidia GeForce Experience
-Microsoft Security Essentials
-Alienware Command Center (needed to adjust LEDs)

Some of you may know more or have experienced the same thing I did and was able to fix it. Before I go running out to replace parts that may not even need replacing or doing something drastic like building a new one from scratch, I want to see what advice you can offer me. I appreciate any and all help you give.

EDIT:

Forgot to include what OS and contact methods, sorry. The OS currently used on my PC is Windows 7 Home Premium, and you can contact me on Steam, Skype, or via Gmail. Send me a PM and I'll give you the handle I use.
 
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Chotton

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I would probably go for a bigger PSU first. Might want to start upgrading components. You can get a mobo for under $150 for that CPU if you look around.
 
M

Modder v7

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I would probably go for a bigger PSU first. Might want to start upgrading components. You can get a mobo for under $150 for that CPU if you look around.
Bigger PSU? It's an external power brick, and I've been told that you can't go higher than 330W because of the mobo or some crap. If this is untrue, please correct me and inform me.

So you also think it could be the mobo? What type of mobo does my system use? All I know is it is a Haswell LGA1150 socket. Thanks.
 
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Chotton

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Bigger PSU? It's an external power brick, and I've been told that you can't go higher than 330W because of the mobo or some crap. If this is untrue, please correct me and inform me.

So you also think it could be the mobo? What type of mobo does my system use? All I know is it is a Haswell LGA1150 socket. Thanks.
I'm assuming it's a desktop, right? Why is the power supply external?
I would probably rebuild it in a new case, if I were you.
 
M

Modder v7

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I'm assuming it's a desktop, right? Why is the power supply external?
I would probably rebuild it in a new case, if I were you.
Why is it external? IDK. Dell/Alienware's choice? It's a pre-build so I didn't choose for it to be external.

Yes; it's a desktop.
 
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