UPDATE: Computer crashing with blue lines

Deusdedit

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Someone had tried to answer me in my first thread, but they seemed to have forgot. Since then I did some troubleshooting. Since my roommate is out of town I swapped his GPU with mine, and now my computer boots just fine without the blue lines. This leads me to believe that my GPU is in fact busted, but I want to make sure I'm not missing anything.

The old thread is here with some relevant info/screenshots: http://www.tomshardware.com/answers/id-2144691/windows-boot-crash-scii-blue-lines-display.html

What I'm trying to figure out is WHY my GPU crapped out. I don't want to buy a new one just to have the same issue happen again and fry it. I'm thinking either:

A) My GPU overheated. I'm not sure what my core temps were, but my GPU and PSU were both pretty hot to the touch after I turned my computer off.

B) My PSU was insufficient for my GPU. My PSU is an Antec 500W and my GPU was a Radeon HD 6850.

What I'm wondering is if my graphics card is actually busted. I can't test it in my roommates computer because it doesn't look like he has the power for it (my PSU had a cord connected to the GPU, and my roommates machine doesn't have the same cord). I'm hoping its just a power supply issue, because stronger power supplies are much cheaper to buy.

Please help!

EDIT: I also downloaded SpeedFan which is measuring my computers internet temperatures, but I'm not sure where the readings are coming from. They're marked Temp 1,2, and 3, but I'm not sure what that means.
 
Solution
It looks like your PSU is insufficient. That PSU has two 12V rails, which ends up splitting the amperage. The GPU recommendation is 450W, which yours exceeds, but the important part is the amperage. Your PSU puts out 19A on both 12V rails, and the GPU requires at least 25A on the 12V rail. What you need is to get a new PSU with at least 25A on a single +12V rail. You should never cheap out on the PSU as it is one of the most important components in a computer. Additionally, a quality PSU will last you many years. Ideally, you should look for a PSU with 45A+ on a single 12V rail. This will also be able to fuel any future GPU upgrades you might be interested in.

That being said, I don't know if replacing the PSU will...

Deusdedit

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[strike]Also, I downloaded the heat monitor you recommended but it still isn't very clear where its measuring from. The heats are labeled as TMPIN0, TMPIN1, and TMPIN2.[/strike]

Oh nevermind, I see it labeled now.
 

Kekoh

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It looks like your PSU is insufficient. That PSU has two 12V rails, which ends up splitting the amperage. The GPU recommendation is 450W, which yours exceeds, but the important part is the amperage. Your PSU puts out 19A on both 12V rails, and the GPU requires at least 25A on the 12V rail. What you need is to get a new PSU with at least 25A on a single +12V rail. You should never cheap out on the PSU as it is one of the most important components in a computer. Additionally, a quality PSU will last you many years. Ideally, you should look for a PSU with 45A+ on a single 12V rail. This will also be able to fuel any future GPU upgrades you might be interested in.

That being said, I don't know if replacing the PSU will fix your issue - it's very possible the GPU is damaged now.

As for HWMonitor, you just have to check which section the temps are nested under, aka Mobo, CPU, GPU, etc. That will give you the general idea of what the temps belong to. It doesn't necessarily mater which is which, just mostly that none of the temps are extremely high.
 
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Deusdedit

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Thank you very much! I figured it might be a PSU problem, but knowing for sure that it is helps me in what I should be replacing. I'll find a computer to test my GPU in and hopefully it hasn't been damaged.