Can a Bad GPU Cause the Whole System to Be Slow?

ccondardo

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May 12, 2013
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Ever since I got a GIGABYTE Geforce 650ti 3 years ago I've had boot problems.

I recently replaced the mobo/ram/cpu so I know those are good, and the issues existed before I added those parts in. I updated those parts anyway but hoped as a side effect maybe the booting issues I saw would go away. They didn't.

Back when I was originally dealing with the GPU issues, I swapped out a PSU so I am somewhat sure it's not that. Today a day or two after replacing the mobo/cpu/ram I had a few crashes in a row while playing and launching a game. Annoyed, I pulled the GPU and played Overwatch with the onboard graphics (it looks like a PS2 game - very enjoyable) and the system was stable.

Since then I've had no crashes, and the computer runs a lot better overall. No boot issues either, and it's a ton faster.

It seems pretty evident this GPU is the issue - but can a bad GPU make the whole system slow? I was having issues with boot times, slow things like launch programs in Windows, etc. Without the GPU everything is pretty snappy.

The other option I've kicked around is replacing the HDD. I think I have an old hard drive laying around somewhere I could reinstall windows on. If it had no issues, then I could be pretty certain that its not the HDD either. But as I stated - I had no issues w/ this build until I slipped the GPU in, and when I remove it, the problems seem to go away.

EDIT: Here is a video of what is happening on a boot fail: https://youtu.be/Cc5le0MDfzw
 

Eximo

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Have you monitored the GPUs temperatures while gaming? An overheating GPU can cause all kinds of odd problems.

How big is this power supply? What CPU/Motherboard/Ram?

Could be the GPU is pulling too much power and causing all your problems. If everything in the system throttles/crashes due to low power that would explain a lot.

I did once have a AMD CPU (54W) that worked perfectly well while drawing several hundred watts out of a PSU, actually melted the ATX connector wires. Quick bypass with some new wires and it ran for another two months. Popped two low-grade PSUs and I had to disable the temperature alarm in the BIOS. Had a dead short somewhere in the CPU that didn't affect operation.
 

ccondardo

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May 12, 2013
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I put the GPU back in and on the first boot it flashed green pixels on boot. Then after 1-2 automatic reboots it loaded Windows.

I then tried to record the issue and the boot was fine for 2-3 boots, then on the 4th try a pretty typical boot fail occurred. Here is a video of what happens: https://youtu.be/Cc5le0MDfzw
 

ccondardo

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May 12, 2013
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Here is the current build:
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-6400 2.7GHz Quad-Core Processor (Purchased For $0.00)
Motherboard: MSI B150 PC Mate ATX LGA1151 Motherboard (Purchased For $0.00)
Memory: G.Skill NT Series 8GB (1 x 8GB) DDR4-2133 Memory (Purchased For $0.00)
Storage: Western Digital Caviar Blue 320GB 3.5" 7200RPM Internal Hard Drive (Purchased For $0.00)
Video Card: Asus GeForce GTX 650 Ti 1GB Video Card (Purchased For $0.00)
Case: Antec Three Hundred ATX Mid Tower Case (Purchased For $0.00)
Power Supply: Corsair Builder 600W 80+ Bronze Certified ATX Power Supply (Purchased For $0.00)
Total: $0.00
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-07-21 10:24 EDT-0400

I have watched temps, and everything is reasonable - also this boot issue happens w/ a cold card.

How would I determine the power consumption of the GPU?
 

Eximo

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Really need to be in Windows to get a temp reading out of the GPU.

I think your idea about installing another OS to see if it is a software problem is a good idea. You could try just booting a live linux distribution and see if it is stable.

Really looks like everything is fine until Windows loads the GPU driver. Might also try a clean sweep of that. Boot the machine without the GPU and uninstall the drivers for it. Then shut down and install the card, see if it makes it to Windows. If it does, a re-install might work.

If none of that works, I would say you are in the market for a new card.

Depending on when you bought that card, it may still be under warranty, but I doubt it.

You did not choose a very good power supply FYI.

 

ccondardo

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May 12, 2013
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While gaming yesterday with the GPU the temps were fine. I don't think it's a temp issue.

I just bought a 950. Hopefully that's the end of it :).