This time the fans ran at top speed! Have cleaned the fan and removed dust from fins but still stops. I didn't trust this so I shut down the laptop and the next morning go to the local pc repair shop to have a look at it. The fan cables for CPU and Power are connected and are fine. When I turn it on, the CPU fan and the case fan turn on, but quickly slow down to a stop in about 3 seconds. The CPU fan spins for a few seconds then stops, the PC will not boot, there are no displays on the motherboard screen. #Retro. Other than that , I get no signal to the monitor and it goes directly to sleep. Thanks. It was my CPU fan which stopped working after 5 seconds while making somewhat of a strange noise (maybe it touches something). Remove all the peripheral device that’s connected ... Of course, once laptop is powered on, the fan starts to work at the POST stage too. I replaced the onboard battery. Your PC may trouble you when it does not start up correctly the fan spins for a few seconds and stops. I dusted out the original PSU and re-installed it. In the last few months it would sometimes not start unless I turned off the power strip connected to the wall outlet and then turned it back on. I had this issue before and after trying a different PSU and it worked, I therefore sent the PSU back, however the replacement PSU has the same issue. Installed 1 DIMM, powered on and finally the computer BIOS loads! The laptop itself dies two to three seconds later after the fan stopped. I removed all the RAM and powered on. The following is my Pc spec: i7 6700k Asus maximus viii hero Corsair rm750i I powered off. It froze up during game, so we had to shut the power off. Fan issue persisted. 13 years ago We had a power outage about a week ago and I had turned my cpu off since it was a planned power outage. Laptop turns on but no display and fan stops after a few seconds Hi I have an Acer aspire laptop V5-551 and when I press the power button it boots up however there is no display on the screen and the fan stops after a few seconds. I tried turning it on again but the same thing keeps happening. The computer worked fine for a year. Yesterday though, i tried turning it on and the fan suddenly stopped working after a few seconds. x220 • Gobi 2000 3g | hdd, msata ssd, wwan, wifi, gps -- unique config ThinkPad 25 Special Anniversary Edition. - Collapse - 1. These pc startup problem are found when the system detects some power issue. The power supply LED is lit and not flashing, and the fan in the power supply runs. I hear the beep, and then in few seconds, before one saves and exits in BIOS, shuts off on its own. If I turn the laptop off before the CPU overheats, and then turn it back on, the fan again runs for a few seconds. Runs fine for the first few seconds. 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