dysfunctions of iMac early 2008 2nd memory slot

I tried to upgrade my iMac in early 2008 by adding a 2nd memory card in slot 2 with a correct map of OWC. also badly hit by installing Apple's original card for slot 2 & OWC in slot 1. When a card is installed in slot 2 the hard drive just repeatedly whirs & stops in quick succession. I tried the compressed air for the eruption of dust. Either card works well in location 1.

It's time for a visit to the shop?

Thank you

It's time for a visit to the shop?

Yes, indeed.

Tags: Mac

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