I have an ancient Dell Latitude E5540 laptop that won’t boot. It was working ok then I disconnected it from the power and put it away whilst I was away on holiday. When I got back and tried to power it on it was dead. No lights, no POST, nothing. I’ve tried various obvious things: battery, power supply, replacing CMOS battery, various power-on reset sequences etc and no joy. The original CMOS battery must have been 9 years old. Any further suggestions?
I did find a video of someone fixing the same problem on an E5540 but the trouble is it’s in a foreign language, Hindi I guess. It looks like he just strips out the motherboard, powers it up and everything is fine again but I must be missing something in the voiceover! Anyone speak Hindi or want to take a guess at what happens at around the four minute mark please? Long shot I know…
https://fb.watch/te3NVaSDDs/