Step Two I have removed the bottom access panel as well as the keyboard. 90% of the suggestions deal with a FUNCTIONING computer. battery is fully powered. Problem can be viewed below the link.. Not sure the CPU is function properly because just changed from another motherboard.. If your PC turns off without warning, heat-related issues might be at work. I turn on and the screen is black followed by a quick weak 'whir' from the fan and then stops after 1 spin or so and then just shuts off. I do not understand why the exact 2 hours gap for self-turn off. Re: Dell Laptop powers up then shuts down I've been elimenating items from the "Black Sreen Issues and Troubleshooting" post and have cleared Step One - laptop will not boot from either AC power cord or the battery. During this time, there's no video on the screen. turn on for approximately 1 second, then everything immediately shuts off. Simply look for the VGA connector (there will be a monitor symbol) on your laptop, and connect it to the external monitor. Once it does, the fan shoots on, but it only takes about 3 seconds to get to below 55°C, so it shuts off again. Took Mobo out of tower and placed it on cardboard. Whenever I turn on my Toshiba laptop, the fan starts to slowly turn itself on and off. ... but this will not help me. So if a considerable amount of noise is being produced, it’s possible the fan … The result is an on-off-on-off-on-off fan that turns on or stays off for only about 2-5 seconds at a time. Same result.. the CPU fan would twitch, the power LED would come on.. and then shut off.. turn back on.. rinse, and repeat. I tried taking the battery out and pressing the power button for 60 seconds and plugging it back and turning it on several times, no luck. I’ve only had this laptop for a few weeks and didn’t even know how to boot it. After following all of the steps my desktop still turns on byitself I also have a laptop with the same build and it does not have this problem. Now whenever I turn it on, the fans/etc. But I’m going to rename the other fans anyway, and remove sensors that aren’t attached to a fan—just so I … Then turn your laptop on. I get a maximum of ten minutes before I … Clean the heatsink as well. A heatsink should be connected on the other side of the fan. It turns ON then immediately turns OFF. The fan turns on but shuts off as it shuts down. Newly Built Computer flashes on and then shuts off immediate by Slawter12 Jun 2, 2012 3:55AM PDT This is my first build, and i'm having a bit of trouble with the computer. If you can’t take out the fan then look for the instructional arrows on the fan. Dust buildup is nothing new when it comes to overheating laptops. 11 years ago In reply to Push start button, fan ru ... Hi Tyler, i have the same problem. The suggestion of cleaning out the fans, etc... already tried it. If the first tip doesn’t do it, then the fans might need some cleaning. If it turns out to be costly or hard to repair I'd take out the hard drive and try to back up your stuff. I suspect this is a processor issue but am not sure. tried plugged to power charger without battery and with battery. Tried plugging in into an external monitor by … CPU fan turns on and off repeatedly after changing the motherboard. The power lights turn on and fans for a couple seconds. Always turn off your computer and unplug the power cord from the power outlet before clearing the CMOS values. Dust Up the Fans. With these removed, I am able to observe the CPU fan. Troubleshooting Computer Turning Off By Itself. PC Turns On but No Display. I have a Toshiba laptop just over a year old and it did the same thing. Here are my specs: Intel Desktop Board dg33fb Intel Core 2 Duo E7500 @2.93 GHz (stock) w/ stock cooler Diamond Radeon HD 4670 w/ Zalman VF900 cooler Patriot PC2-6400 2GB RAM (2x1GB) PSD22G800K Thermaltake 500w PSU Maxtor 320GB HDD The 2 second on-off cycle of fan and power light continues without any display or booting. It's just as I said in the title. at most 3 seconds its on for. If you want more control over your CPU fan and other aspects of your system, a fan controller is a good bet. The computer fans will suddenly speed up (the power light stays solid though), then the monitor will say "Monitor going to sleep" and go black, and the keyboard/mouse will no longer respond and their lights turn off as they would do if the computer were shut down. To begin with, heat and your computer are a pretty bad combination. The easiest way of cleaning the heatsink would be an old tooth brush. No change. Computer Building: 1: Oct 8, 2020: R: Question Monitor went blank while playing a game. no display though and the machines cuts off right away. Thinking it was the fan itself, I got a replacement fan and swapped it out. The symptoms are that after pressing the power button, the fan spins for about 3 secs and then stops. I don't think I should do it with the system on.. Once the fan is out of the casing, clean it properly. Laptop Fan Turns On and Off - Then Laptop Shuts Down Completely? Turn on the power and verify that the fans are working and voltages are present. If anybody is knowledgeable about the issue, please educate me. Just did this. Hi all, I have a Sparq M53S gaming laptop (made in Korea). Only had PSU, CPU and 1 stick of RAM in. I was streaming video, then turned the laptop off and put it in my pack. 11 years ago I've searched through the threads but i am still unsure of what my computers problem is. Method 2 only had mouse and keyboard ability to turn on the the computer which I disabled along with the network adapter was already unchecked. Failure to do so may cause damage to the motherboard.