"disk read error" means bad sector. since system fails to boot, the bad sector(s) is on vital location that contain important data for system booting.
you can enter safe/recovery mode to repair the error or use bootable CD and perform chkdsk which can check bad sectors.
besides, there are third-party tool on the Internet that can check and repair tools too.
it happens that some bad sectors can't be repaired. in that case, you'll have to change a new disk.
if your computer or hard drive doesn't run out of warranty, you can contact tech support team for help.