iMac crashing?

So a while ago my iMac wasn't able to start up anymore. So I had to use Disk Warrior to fix it.

Now, maybe once every month. All my apps will stop working so I have to force quit them. The internet connection will go and if I start up apps again they won't work. So then I have to shut down but it gets stuck on the spinning wheel so I have to hold the power button down instead.

After I go back on everything is fine again, until it randomly happens again.

Any idea whats wrong and how to fix it?

Thanks.

Try running the maintenance script in onyx: Titanium's Software • Home

Strukt said:

Try running the maintenance script in onyx: Titanium's Software • Home

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If it crashes again I will do the repairs etc. Thanks for sharing.