Analternative possibility is an issue with the power supply in the computer. Generally these can be replaced for very roughly US$100 (assuming it's not a high power computer like a dedicated gaming PC). I'd try replacing the battery, and if that fails go to a PC store and replace the power supply.
Youcould have an arcing pin on a connector somewhere, or something like that. After you take out your board and re seat it, plug nothing to it except your graphics card, CPU Fan and power supply to the board, the GPU, see if you can get into BIOS. Like in the video, try it out on 1 stick of RAM 1st. See if it boots.
Turnit off and back on again. Jerrold Foutz is a friend who's an expert in the design of power supplies. Some years ago, he provided an interesting write up on unplugging the power as perhaps the single most effective electronics-troubleshooting technique. 1. The topic came up in a discussion when I recommended power-cycling a router — unplugging it, waiting 30 seconds, and then plugging
Withoutturning this into an answer to a question you didn't ask, what I ended up doing was pulling the plug from the back of the machine (not the wall), waiting a while (couple hours), and then plugging it back in. This got it to turn on. Once it was on, I did what I did on the PS4 and modified the power settings in the system.
Turnsout I didn't have to. Here is the fix: 1) Unplug the iMac power cable from the back of the machine (not from the wall or power strip outlet) 2) Push in and hold the iMac power button for five seconds. 3) Release the iMac power button. 4) Plug the iMac power cable back into the back of the machine. 5) Press the iMac power button normally.
Second on many brands of UPS, repeated beeps indicate overload and/or weak battery. Test the UPS with no load (everything unplugged), and then gradually increase the load (it might be easiest to test using incandescent lamps). If the supply stops beeping when running without load, but beeping starts with a 25 or 40 watt (W) lamp, the battery
ChosenSolution. Try a power refresh and check if this resolves the problem. Remove the charger (if connected) and the battery from the laptop. (Here's a link to the ifixit Dell Inspiron 1564 Battery Replacement guide) Press and hold the Power button for 30 seconds to drain any residual power from the laptop, then release the button.
2 Unplug your computer and remove the battery. This is a sort of first aid for your computer. Simply unplug from any power sources, then remove your computer's battery (or laptop). After about five minutes or so, return the battery back and hold down the power button for about 10 seconds (power still unplugged).
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