No POST beeps but all fans and drives run. Idea was to reset BIOS. So, no "beeps" implies a problem with the motherboard. Check your RAM also. Note: When I changed the Clear RTC jumper from Normal to Clear RTC, fans did not spin but Power LED came on. Even bad RAM will result in display problem. If POST does not start, there will not be any "beeps". It wouldn't wake up from sleep the other day - just a black screen. I'd appreciate some help on this one. When the power supply to your computer fails, then it won’t start or power up, but the fans spin regardless. Was convinced it was the mobo so we bought a new one. Still does the same thing. I'm kinda at my wits end with this project so I'm looking for suggestions on what to try next. 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. 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. If POST does start, there might be a bunch of "beeps". 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 . So I tried holding the power button. ... You need to run it for at least 8 passes unless errors start straight away. 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. The power comes on, I get lights and fans but that's it. If you have no idea about RAM, then click on the below hyperlinks "Images". 16 GB. 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. 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 I'm a bit stumped as to where to go from here. I build a PC for a friend but it will not boot, POST, or give me beep codes. Spec list: ASUS M5A97 R2.0 Motherboard AMD FX8350 16 Gigs of Crucial brand DDR3 RAM (2 DIMMS) Seagate 550W power supply If not you may be dealing with a power issue . Second day trying to get it to work. Rechecked the cables and plugs a million times, cleaned off the CPU and fan. The lights would come on, the fans would spin (case fan, cpu fan, power supply fan, video card fan). 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