can dust build up lead to sudden pc restarts ?

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And I say yes...usually dust badly impacts cooling of components like CPU and GPU. Over time this then leads to reaching the components temperature maximums and causes e.g. stuttering in games, or even restarts and crashes.

So to answer your question...can do...yes, but not necessarily and it might take some time and a lot of dust though. I have seen cases already being dirty like h...and users wondering why the poor hardware did no longer want to operate.
Most likely....NO.

I say this as I have worked in a plant for 30 years and I have been responsible for many pieces of electronics and PCs and they are generally filthy and I see very few failures that relate to the filth.

The failures are usually due to other things. Power outages are a killer.
 
And I say yes...usually dust badly impacts cooling of components like CPU and GPU. Over time this then leads to reaching the components temperature maximums and causes e.g. stuttering in games, or even restarts and crashes.

So to answer your question...can do...yes, but not necessarily and it might take some time and a lot of dust though. I have seen cases already being dirty like h...and users wondering why the poor hardware did no longer want to operate.
 
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