Hi, just changed case and my computer wont show a screen... I have a wireless mouse, and I can see it is charging, but the keyboard wont light up or anything.
When I press the on button everything seems fine ecxcept for a little red light turns on wich says "memOK!".

Sorry for bad englsih

So, when you say you changed the case, I assume you put the old motherboard in the new case? Are you sure the powersupply is properly connected? Disc drives? What else did you change?

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