Great. Thanks for the pointers. I may well upgrade to a new card sometime. As the issue was happening when just using a browser and not even gaming, I don't know that it would be the card...

Thanks for the tip there. I've now udated the drivers for my sound card. Unfortunately it didn't help - still the occasional freeze. But that was well worth trying definitely.

So a few things...

Hmm, well after trying first one stick and then the other in slot 1 for a few days each - I'm still getting freezes either way. So maybe it's not the RAM after all. Thanks very much for the...

Thanks for the tip on which slots to put the RAM in. I had it in slots 1 and 2, which isn't one of the configurations they recommend. Changed it to 2 and 4, but unfortunately am still getting...

Ack sorry yes - Z87 Pro4.

Hey that's great - thanks very much. My RAM is on two 4GB sticks, so I could always try running with just one of them at a time for a while, see if that helps. If so, the other stick is suspect.
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Thank you very much for the information guys. I didn't know about the View Reliability History function in Control Panel. I've been in there now and had a look around - there are quite a lot of...

I've run a full scan with Windows Defender already - no issues there. But what do you mean by using Control Panel to detect screen problems? I'd typically just go there to change resolutions or...

Hello BugMeister,

Yes of course - that would help wouldn't it! I've filled out as much as I can at the moment, but please let me know if there's anything important missing. I could open the case...

Over the past week or so I'm getting occasional screen freezes - at first it was while gaming (World of Warcraft), but I'm finding the same thing can occur when I'm only using a web browser...