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If the original cord has failed, your computer should restart with the new cable. Try swapping out your old power cord with a newer, compatible one. Unplug the computer from wherever it’s currently plugged in and plug it directly into a wall outlet, bypassing the UPS, surge suppressor, or power strip.
Open the computer and reseat all expansion cards and memory. After these cards are reseated, make sure all cables are firmly connected by disconnecting and reconnecting them.
Start with the computer’s BIOS (Basic Input/Output System), which, in most modern PCs, has been replaced with the far less friendly-sounding UEFI . It’s also worth checking to make sure the brightness didn’t get accidentally set to zero. If it’s an option, try plugging the computer into a different display to see if that resolves the problem. Unfortunately, not all motherboards even use beep codes, so this may not be a feasible option.
If nothing still happens, make sure that outlet works by plugging something else into it, like a desk lamp, and confirming it turns on. If you try to turn on your computer and absolutely nothing happens, there are generally only two possibilities. Either the computer’s internal power supply has failed, in which case it probably needs to be replaced, or there’s no electricity entering your PC. Your first reaction when discovering your recuva free download PC won’t start is probably to panic, but the issue often isn’t catastrophic. You can also listen for error code beeps from the motherboard at startup as another way to identify why your PC won’t turn on. Try to move the computer to a different power source and make sure the display is working correctly. While you can try replacing a bulged or blown capacitor, it’s very likely that the motherboard defects above require that it be replaced.
If, after following the steps in the sections above, your computer still receives no power, the power supply may have failed. If you don’t want to replace it yourself, we suggest taking the computer to a repair center. If any computer hardware was recently added, we recommend you temporarily disconnect or remove it to ensure that it’s not causing your issue. A power supply switch often has a "0" and "1" which is binary for "off" and "on" . If you don’t have another power cable to test with, see if a friend or a family member has one you can borrow. Verify the cable supplying power to your computer is not bad or damaged by using a different one. If you have a power strip or UPS , disconnect the computer power cord from it and connect the cord directly to the wall outlet.
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After everything is disconnected and reconnected, connect only the power cable to the back of the computer, then try turning it on. If the computer turns on, you can turn it back off and reconnect all the cables.