Not a "disk check", a "diagnostic".
The Windows chkdsk /r command is what most think of as a "disk check", I don't want that.
The appropriate hard drive diagnostic...is avaiable for download (with instructions) from the website of the hard drive manufacturer.
To find out the manufacturer of your hard drive...go to Device Manager, click on Disk Drives...use Google to see who manufacturer is, if not obvious.
Free Hard Drive Testing Tools - Hard Drive Diagnostics - http://pcsupport.about.com/od/toolsofthetrade/tp/tophddiag.htm
If a long and a short test are offered on the diagnostic...run the long test.