Solved Fans running, Lights on but no display Tags: Homebuilt Light Display Cable Systems Last response: September 9, 2012 1:47 AM in Systems Share montosaurous September 1, 2012 11:51:44 PM I built my PC today. It turns on, but won't boot. The monitor just says "No Signal", but when I unplug the Cable from the GPU it says "No cable connected". More about : fans running lights display | E-mail me updates | Report abuse Register or log in to remove montosaurous September 2, 2012 1:52:53 AM Anyone? | Report abuse Best solution PanicMaster85 Homebuilt system Authority September 2, 2012 4:23:29 AM sounds either like a mobo issue, psu issue, or gpu isssue try the following 1) Check all connections and that your cpu is getting power (ATX12v) 2) Try a old graphics card from a old computer 3) Reset C-mos http://www.youtube.com/watch?v=Pdp_L5IxaNI 4)check your PSU http://www.youtube.com/watch?v=5FWXgQSokF4 Hope this helps... sorry for the late reply | Report abuse PanicMaster85 Homebuilt system Authority September 2, 2012 4:27:13 AM but to answer your question in the other post it could... have you tried the your card in any other slots/busses? also it could be the ram try each stick in each bus/slot seperately so one at a time(4 start ups for each stick) | Report abuse montosaurous September 9, 2012 1:47:23 AM Best answer selected by Montosaurous. | Report abuse Register or log in to remove Ask the community Publish Tom's Hardware>Forum>Systems>Fans running, Lights on but no display> Related ressources: ForumNeed Help! Lights Turn on all fans run but no display ForumHELP no display , no beebs, just fans anbd lights ! ForumFans running but no display ForumLights and fans work, no noises or booting ForumNew Build. Lights , Power, Fans , but NO Display or Beep ForumScreen goes blank fans and case lights stay on ForumLights on, fans on, no beeps, no POST. ForumNo display but fans are running ForumRunning but no lights or video Forum570Ti No display at boot. Fans running . Forumpc won't boot no beep no lights no display ForumBoot up problem. Lights and fans are on but screen is blank. ForumLights , fans , beeps, but no display ForumNew PC, No Signal Display , No HDD Lights - Please Help ForumFans turn on but no display and no keyboard lights ForumQ6600 and MSI p6n sli v2, no post, fans running ForumCan't boot. Mobo standby lights up. No fans . No beeps. ForumComp wont boot, no beep, just fans and lights ForumPCI compatibility question ForumNew build help wont display image More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !