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So hello, I’m new to the computer community and I’ve got an ADP PC which needs repair mints so today I’ll show you how to fix your z440 today so as I was expecting if you have your PC is old and it beeps 4 times Then it means some problems that you can easily see what is causing the panel and if you see that big metal part with sticker on it. so what is the major problem with these bleeps the most common problem is from the power supply maybe it’s overpowering the components, so just get a blower or something to get the dust away from these cables. It’s the ports but it’s not to go to sketchy eBay to buy a brand new PSU which is not expensive . hope it helped you

 

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