My problem is the same as many others I have seen listed. The keyboard would not light up either, only the mouse. Took off back, cleaned fans, redid thermal paste on CPU/heat sink. Previous Next Sort by votes. Tried … Fans spin for half a second and then turn off. Idea was to reset BIOS. Notice the CPU fan spins for half a second and stops. 16 GB. The fans would all spin fine though and continue on until I hard shut off. PC doesn't boot into Windows on 1st attempt in General Support Hi all, I'm new to this forum and have the problem of only booting into Windows at the 2nd attempt. But as of this morning, turning it back on not only does that, it also sometimes causes it to shut off and reboot to the same problem by itself. Status Not open for further replies. Have tried all fixes listed. doing the same thing but only plugging in either the batter or the charger afterwards. PC won't turn on. I tried to turn it on after and it wont boot. PC was working fine all these years, suddenly went to turn it on and loud fan noise, blank screen, pc won't boot. PC wont turn on. 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. Dec 26, 2013 12 0 10,510 0. B. bmc Honorable. Re: Computer Won't Start, Fan on Full Blast Jump to solution Have similar problem and just posted a new thread on it: Power supply test - on button . And it won't turn on either way. Fans spin (heatsink, chassis) and power LED comes on, but no video. … Troubleshooting. PC won't boot, fans spin, CPU LED lights up. Does the same thing, CPU fan spins for half a second and stops. Forums. Tried turning on the PC again. Everything worked fine until system required new heatsink/fan, and motherboard had to be removed from case. Things I have tried: - unplugging the battery and charger, holding the power button for a minute, then plugging them back in and trying to start it. Thread starter bmc; Start date Jan 3, 2014; Sidebar Sidebar. Fans spin loud. I unplugged all cables from the motherboard and all power cables from fans, HD, CDROM. [Solved/Closed] Report. Here are my specs: ... Computer fan loud and won't turn on - … No lights come on at all. My system is home built, the boot drive being a Samsung 850 EVO series m.2 SSD. - letting it charge all night (with fans spinning). I built my first PC like a week ago with no problems, updated bios and installed windows. Still does the same thing. Power cord is fine, f10 will not start BIOS. Note: When I changed the Clear RTC jumper from Normal to Clear RTC, fans did not spin but Power LED came on. Tried turning the computer on again, by using screw driver to short the power switch pins. Systems. Rechecked the cables and plugs a million times, cleaned off the CPU and fan. Hardware. The fans were spinning loud but everything else just seems fine. 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