Alright, which specific disk checks should I do? Is it the same one greg wants me to do?The problem performing a disk check is a bad sign. My suggestion still stands.
I can confirm that system active and boot are in the right places. I will run the disc check soon, which boxes do you want me to tick though in the box?Confirm that Disk Mgmt labels read "System Active" on 100mb partition and "Boot" on C.
Please run a full Disk Check on all partitions from the steps in the blue link. This is not the same as the one you were prompted to do.
Then run the maker's HD Diagnostic