Monitor goes into sleep mode after installing a new graphics card

  [DELETED] 20:14 15 May 2014

Usually the recommended PSU for cards is the minimum. MechKB 2 should be able to give you better advice if he pops in.

Try reseating the card again and check the power connection/s to it. If all is sound, it's a possibility the card is defunct and you should contact the seller.

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