Thanks for your replies, everyone. It turns out that there was a partition error, but I got the same result when I re-partitioned and re-installed.
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Lenovo G510 laptop
Intel® HD Graphics 4600
1 Tbyte HDD
http://shop.lenovo.com/us/en/laptops/lenovo/g-series/g510/The system boots up enough to display the Lenovo logo, but then it displays a blinking cursor in text mode and does not respond.
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Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00056ed7
Device Boot Start End Blocks Id System
/dev/sda1 2048 35653631 17825792 82 Linux swap / Solaris
/dev/sda2 35653632 77596671 20971520 83 Linux
/dev/sda3 77596672 1953523711 937963520 83 Linux