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There are many reasons why a laptop might not start, but today we're focusing on one specific case: a dead BIOS battery. Often this problem is overlooked, but it can cause serious startup problems. I'll open the laptop to find and check the BIOS battery. Then I'll explain how to replace the battery to fix the problem. So if your laptop suddenly won't start and you've already ruled out other possible causes, a dead BIOS battery could be the reason. Affiliate Links: ✅My PC tool: https://amzn.to/3RpXEM0 ✅Isopropanol: https://amzn.to/49WoeU3 ✅Wiha side cutters: https://amzn.to/3T4UXAy ✅Artic MX-4 thermal paste: https://amzn.to/3T2sTxA ✅AeroCool case Midi Delta-G v1: https://amzn.to/3T4zesl