A friend is having me look at his Inspiron N5110. It had random shutdown issues, and after I started investigating it started to have issues with not turning on. The most common issue was a black screen and three beeps on boot. I pulled the CMOS battery and it didn't help. Same issue. So I bought a motherboard off eBay and installed it in the laptop. I transferred the CPU from the old one onto the new one, and now when I put it all back together, same issue! It still beeps 3 times on boot and has a black screen. I've tried pulling the CMOS battery and RAM again, and it still doesn't work. Also tried putting the new CPU in the new motherboard and still the same problem. Is there anything else I can try? Did I get a second bad board? The seller said it was tested and guaranteed working.
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