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CPU dropping to .75ghz and locking

iTzBlaKeB
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GTX 1070ti

i5 4670k not OC

 

My GTX 970 quit working so I replaced it with a GTX 1070ti. My CPU is i5 4670k. I've had it for about 3 weeks now and all of a sudden my CPU will throttle down and drop to .75ghz and stay there. I can't even play Dota 2. I updated drivers, set power saving  to performance set GPU to performance but still it drops. The temps are never high. Sometimes the CPU will drop to .75ghz for no reason but I believe when playing a game and having music playing or anytime it gets near 90-100% usage it spikes down.

 

I'm kind of unsure what to do or if I need to buy a new CPU because just a couple of weeks ago I played dota with music and even videos or something playing on my 2nd screen. The only "fix" I've found is either unplugging the entire computer while it's running or switching the PSU off while its running and restarting (sometimes multiple times) until the CPU is running 3ghz and it may work fine for an hour to 2-3 days. Restarting may cause it to start at .75ghz. Any advice is welcome thank you all.

 

Would flashing the bios be a possible fix? Reapply thermal paste (even though It's not overheating)? Should I overclock/underclock the CPU? I had the thought maybe under-clocking it would stop it from crashing?

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Maybe disable any and all power saving measures directly in bios?

Speedstep, C states, etc. that might help.

Otherwise general hardware troubleshooting such as reseating and remounting everything.

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You could try manually setting it to 38 on all cores at whatever voltage it should be at that frequency. 

 

Boot up and monitor, if frequency drops and it's not maintaining voltage then you have some other problems.  Maybe MB or PSU?

 

I'd also pull the GPU and run integrated graphics to see if the problem persists.

 

And of course flash to the latest bios if you don't have the latest one and/or load default settings.

 

Those are my ideas anyway.

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On 12/18/2018 at 3:03 PM, iTzBlaKeB said:

The only "fix" I've found is either unplugging the entire computer while it's running or switching the PSU off while its running and restarting (sometimes multiple times) until the CPU is running 3ghz and it may work fine for an hour to 2-3 days. Restarting may cause it to start at .75ghz. Any advice is welcome thank you all.

This also points to a bad PSU.

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