New gpu, windows 8, no signal Tags: Graphics Cards GPUs HDMI Windows 8 Graphics cheshire fox February 13, 2013 6:33:02 AM acer AG3620-UR308 i took out the gt 630 and plugged in a gtx 660, hooked up the 6-pin power computer turns on, no hdmi signal to the monitor i'm guessing this is a secure boot issue, also the non-gpu hdmi and vga are 'disabled' the hdmi port is even filled with plastic ._. anyway, i assume i need to unplug the new card, put the old one back in, change my bios or is there a quicker more sane solution to this More about : gpu windows signal Can't find your answer ? Ask ! Publish Related resources: ForumDVI No signal , after Windows 8 Startup and Bios screen ForumNew GPU , No Signal ForumNew PC, Monitor displays "No Signal ", VGA LED is red. ForumNew GTX 660 No Signal /Issues ForumNo HDMI Signal in monitor ( new build ) ForumSudden "No Input Signal " on old GPU ForumNo signal to monitor when using discrete GPU ForumNew build. Screen receives no signal ForumNew PC worked, now getting "No Signal " ForumMonitor gets no signal but not a bad gpu ForumGetting no dvi signal but gpu is good ForumNew motherboard,no signal to monitor ForumMonitor no signal when gpu is plugged in ForumNew Monitor, no signal Help! ForumNo DVI signal after installing new GPU ForumNeed Guidance ForumNvidia Physics on CPU or GPU New Thread ForumWindows 7 wont allow high resolution? ForumNew gpu for 150-185 USD ForumNew Graphics Card More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !