MacBook air does not have startup disc, boots to? folder.
I have a Macbook Air 2010 11” that boots to a ? folder all the time. I did all the normal things to try to come to a solution and all have failed. Reset smc, Pram, even booted into an external drive and ran disc utilities and found that the internal drive is seen, but there is no start up disc. So I played around a bit with the logic board and found all circuits from the Sata sector of the MCP to the SSD were ok. I even checked the PCI circuitry and all is good there. The one thing I noticed is that the MCP area on the board is getting very hot to touch 145 degree F, as compared to a known good board which is 125 degrees F. Could this be a bad MCP? Any thoughts would help? Thanks!