I am an iMac user and I have an issue with resetting PRAM. Couple of days ago I was playing movie on my iMac. While playing movie on iMac unexpectedly sound issue occurred and when I was trying to solve this issue, I did some research on internet to solve this issue. I saw some suggestion, in that they gave advice to reset PRAM but whenever I was trying to reset PRAM with my wireless keyboard and mouse but my wireless keyboard isn’t working on booting time. Please let me know if anyone have fix for this.
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