Hello,<\/p>\n
Since around a week now, my second monitor has stopped being detected.
\nHere’s how my pc was when it happened :
\nWindows 10 ( upgraded last summer ( july) from windows 7 -> no issues until last week)
\ni5 4670K processor
\n8 Go ram
\nZ87 G45 motherboard
\nGTX 770 graphic card
\n700 W PSU
\n250 Go SSD
\n2 To HDD
\nMain monitor : Samsung SyncMaster S24B350, plugged by vga, with dvi adapter, to the 770
\nSecond monitor : Panasonic TX-L19C20E, plugged by HDMI to the 770<\/p>\n
I have access to another computer ( my brother’s) to check my hardware for failure, and his computer works fine. I’ll call his PC2, and mine PC1
\nAt first, I suspected a hardware malfunction, so I made the following tests and changes :
\nI tried my GTX770 in PC2, and plugged my monitor 2, with my HDMI cable. This worked fine, I had something on both screens.
\nI also tried my motherboard + CPU + 770 on PC2. This also work.
\nI replaced my PSU. with a new one ( 650W)
\nI replaced my motherboard with a GigaByte H170-HD3
\nI replaced my CPU with an i5-6500
\nDuring all of this, I cleaned my case, replugged everything several times, HDD and SSD moved around.
\nI also did a clean install of windows 10, using the restauration tool in windows 10 ( not using a cd or flash drive)
\nI reinstalled my graphic drivers several times, using different versions ( this was one of the first thing I tried), and also trying it with DDU to remove everything.
\nI tried 2 different HDMI cables, that I confirmed worked anyway using PC2.<\/p>\n
Right now, i’m using a GT640 from PC2, that worked fine on PC2, but I still have my problem on PC1, using this other card.<\/p>\n
Monitor 1 is plugged to the 640 with a vga cable ( no adapter), and monitor 2 is plugged to the 640 with an HDMI cable.<\/p>\n
During boot, only the monitor 1 display POST, and later windows 10 loading. At no point the second monitor display anything.<\/p>\n
I tried booting by only plugging monitor 2 with the vga cable, and it displayed POST, and displayed windows 10 loading for a few second before stopping, and then receiving nothing at all. At this point I have to unplug monitor 2 and replug monitor 1 with VGA.<\/p>\n
Can anyone think of anything else I can try?
\nThank you very much for your time<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"iawp_total_views":5},"question-category":[65],"question_tags":[],"class_list":["post-2885","question","type-question","status-publish","hentry","question-category-windows-10"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/question\/2885","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/question"}],"about":[{"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/types\/question"}],"author":[{"embeddable":true,"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/comments?post=2885"}],"wp:attachment":[{"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/media?parent=2885"}],"wp:term":[{"taxonomy":"question-category","embeddable":true,"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/question-category?post=2885"},{"taxonomy":"question_tags","embeddable":true,"href":"https:\/\/computing.net\/answers\/wp-json\/wp\/v2\/question_tags?post=2885"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}