Laptop boots pass the logo screen onto a blinking cursor. This can also occur if the master boot record is corrupted. Test the drive first before fixing the MBR.

Turn on the laptop then press the ThinkVantage button to access the BIOS.

Note: You will only fine the blue ThinkVantage on IBM/Lenovo laptops.

Select Hard Disk(HDD) Diagnostic Program.

Select Main Hard Disk Drive.

Diagnostic will begin.

As you can see, in this case the hard drive failed the read test. Replace the hard drive and reinstall the OS.