Check your RAM also. Rechecked the cables and plugs a million times, cleaned off the CPU and fan. Motherboard LED lights but no fans or boot - posted in System Building and Upgrading: Hi, I am building a new PC but am currently tearing my hair out trying to work out what the problem is. Fans spin (heatsink, chassis) and power LED comes on, but no video. Was convinced it was the mobo so we bought a new one. If POST does not start, there will not be any "beeps". Note: When I changed the Clear RTC jumper from Normal to Clear RTC, fans did not spin but Power LED came on. Spec list: ASUS M5A97 R2.0 Motherboard AMD FX8350 16 Gigs of Crucial brand DDR3 RAM (2 DIMMS) Seagate 550W power supply It wouldn't wake up from sleep the other day - just a black screen. If POST does start, there might be a bunch of "beeps". The fans actually go crazy, spinning at full force. So I tried holding the power button. The power comes on, I get lights and fans but that's it. Idea was to reset BIOS. Just because your fans are running and your motherboard light comes on doesn't mean you have enough power in the power supply to run the machine .Power supplies can die slowly and still appear ok .If you have access to another power supply try changing it out . I'd appreciate some help on this one. ... You need to run it for at least 8 passes unless errors start straight away. I'm kinda at my wits end with this project so I'm looking for suggestions on what to try next. Are you getting post beeps on startup ? Even bad RAM will result in display problem. Second day trying to get it to work. If you have no idea about RAM, then click on the below hyperlinks "Images". This is a new build. Tutorial: No POST (Power On Self Test) Thread starter kimsland; Start date Sep 29, ... Unplug the case fan ... is usually the biggest factor on computers that will not start Build: ASUS Z270-AR 1151 ATX Corsair 64 GB 16x4 D4 2666 Corsair Crystal 260X RGB ATX Zotac GTX1080Ti FE 11GB Tower lights up, RGB fans light up, fans spin, video card lights up, no memory LED on the motherboard, power LED lights up and RGB keyboard lights up. No POST beeps or BIOS on screen. PC won't start, no POST, no fans, nothing :( Thread starter DunstanL; Start date Aug 12, 2009; ... i then connected my new psu up and powered up with no drives connected to the mobo and the computer went through post etc fine. There is no beep however, and no … When the power supply to your computer fails, then it won’t start or power up, but the fans spin regardless. If you notice that your CPU fan is running but there is no display in the screen, then remove the RAM from the slot, clean it and place it back properly or try another slot. The POST will cause the speaker to "beep" (in a pattern of short/long/silence) if the POST detects any errors, such as no RAM detected. Installed it just fine, LED green light comes on the mobo but the fan starts up for a few seconds then stops and the computer doesn't boot. If not you may be dealing with a power issue . Tried with a different PSU but no luck. I'm a bit stumped as to where to go from here. No POST beeps but all fans and drives run. I build a PC for a friend but it will not boot, POST, or give me beep codes. Still does the same thing. So, no "beeps" implies a problem with the motherboard. 16 GB. Everything worked fine until system required new heatsink/fan, and motherboard had to be removed from case. The lights would come on, the fans would spin (case fan, cpu fan, power supply fan, video card fan). I've had my PC for a year. Jumper from Normal to Clear RTC jumper from Normal to Clear RTC jumper Normal! 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