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Hi and thanks for any help anyone can provide. My laptop is a Dell G3 15. When I turn it on the fans go on full blast and the keyboard lights up. The power light flashes amber 3 times then white 5 times. I have tried the following; Disconnecting the power supply, the battery and the coin battery and holding the power button for 15 seconds and re-assemblingHolding D on start up and the display test does work.On separate starts removing 1 at a time; removing the hdd, the ssd, the ram, the keyboard and light, trackpad, fans, display and speakersI replaced the motherboard with one bought from a reputable company and still no success at all
Gordon Devlin I suggest you power off your computer. Remove AC adapter, all peripherals such as a external monitor, external mouse, flash drive, printer, external drive of any kind, speakers etc. Clean or replace your RAM modules (Pencil erasers work great for that). Then replace the AC adapter and power on your computer. Let us know what happens. According to Dell the 3amber-5white code is SBIOS Flash Corruption which would not matter to you since you have a new board. Did you replace the CMOS battery with your new board?