Solved! got sound though headphones but not speakers

Feb 9, 2018
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Lenovo lap top windows 10 no sound out of lap top without headphones was fine up till few weeks ago sometimes works for about 10 minutes then stops again
 
I brought a small cheap speaker which if I plug in works and I get sound strange , enough if I take the speaker straight out when playing the speakers work on there own very strange but works for me