I thought my ThinkPad E530 was junk when it suddenly wouldn't boot. I was looking for used computers and ran across sites that sold system boards for almost nothing. I spent less than $20.00 for the board and spent a few hours getting it installed. The surprise came when it booted up and everything worked. (Fortunately I had the hardware maintenance manual to help me replace the board). This was the best $20.00 I ever spent. It's nice to have this old friend working again