If Monitor Displays “NO SIGNAL” or “SELF TEST” – this means that your ... If you have a VGA or HDMI cable be careful not to screw the ...TroubleshootingTipsHowtotroubleshootnodisplayoncomputermonitor.jcs@jesterscomputers.comcomputerhasnovideo,dvivideo,hdmivideo,monitorpowerlight,nocomputerdisplay,nodisplay,noimageonscreen,nomonitordisplay,on-boardvideo,replacevideocard,replacementvideocard,vgavideo,videocardissue,videocardproblem,videodriversissueJuly2,2016Therecanbeanumberofreasonswhyadesktopcomputermonitorisnotdisplayinganimage.Beforetakingyourcomputerormonitortoyourlocalrepairshopyoucantrysomeeasytroubleshootingstepsbelowtohelpdeterminethecauseofyourdisplayissue.PleaseNote:Wehavereceivedalargenumberofsupportrequestsrelatedtothisarticle.WhilewedoofferFREEtroubleshootingtipsonourwebsiteweareunabletoofferfreeone-on-onesupport.Ifyou’reinterestedinpaidphone/remotesupportfeelfreetocontactus.IfMonitorDisplays“NOSIGNAL”or“SELFTEST”–thismeansthatyourcomputermonitorisworkingproperlybutisn’tgettingasignalfromthecomputer.Starttroubleshootingyourissuebyensuringthatbothendsofthevideocablethatgoesbetweenyourcomputerandyourmonitorarepushedinthewholeway.Yourmonitorcablewilllooklikeoneofthethreeexamplesbelow.IfyouhaveaVGAorHDMIcablebecarefulnottoscrewtheadapterinplacetootightly.Youalsowanttobecarefulnottopullonthecableuntilthescrewshavebeenloosenedcompletelyfromthebackofthecomputer. VGADVIHDMI      Monitorpowerlightisoff– Ifyourmonitorisnotdisplayingapowerlightthenyoumighthaveaproblemwithyourmonitor.Ensurethatthepoweradaptertothemonitorispluggedincompletely.Testyourpoweroutletwithanotherdevicesuchasalamptoensurethepoweroutletworks.Ifyouhaveanothercablethatmatchesyourmonitorspowercableyoucantryusingthat ortakeyourmonitortoalocalrepairshoptoseeiftheycantestyourmonitor.Ifyouhaveanothermonitorthatyoucanplugintoyourcomputeryoucantestthatjusttoruleoutanypotentialissueswithyourcomputer.MymonitorhaspowerbutIhavenodisplay–usuallythispointstoavideocardordisplaydriverissue.Youcanfirstcheckto