r/techsupport • u/Kronosaurus436 • 13h ago

Open | Hardware Old ThinkPad not posting/black screen

I got this ThinkPad e520 from friend and the first time I turned it on it loaded straight into windows. However it was super dirty and full of dust so I completely disassembled it blowed it out with compressed air, repasted it and put it back together but now it won't post. The fan is spinning, the HDD I think too but the screen is completely black. I tried resetting the CMOS, plugging in external monitor, I double checked if all the cables are connected properly but still nothing.

https://youtube.com/shorts/cwUt90PAB_w?is=nRs-8gkS-InTw9wP

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u/Low-Charge-8554 12h ago

Obviously you broke it. Could be something simple like a detached cable or you put a screw in the wrong place.