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Message: <blockquote data-quote="dvvega" data-source="post: 4399445" data-attributes="member: 524">Just blame your boyfriend ... it is all his fault <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile    :)"  data-smilie="1"data-shortname=":)" />As to why is his machine still working and yours not? Just dumb luck for you.The third prong is what I was talking about on the power cables. That is the earthing prong. And the fact you used a surge protector discounts the cable being at fault.So that leaves the power supply as being the weak point or the memory. Now the issue to test this is if the power supply caused the problem or the memory things caused it.Unfortunately you cannot test this without risking another power supply. Your theory of cross-cabling is pretty non-valid ... the reason for this is that it would also require the power supply to not be "normal" since your previous supply was okay (in the old DVR system).So you have the following choices to test what is wrong ... get an old, but working, power supply and put it into "Mr Explody" and see what happens. If it happens again then it is the memory at fault and what happened when you pushed it. If nothing goes wrong then it was your supply just giving up its life.The other option (to risking a supply) is to get the old one checked by a repair guy. D</blockquote>