Please use CrystalDiskInfo
if you use this tool.
The CrystalDiskMark there does bench testing, and if a failing hard drive is the cause for your problems it could be dangerous for your needs right now.
Others here prefer HD Tune Pro (trial version) off this link -
Please use the tool and attach the full info off the +health
tab for each and every hard drive.--
The only thing necessary for the triumph of evil is for good men to do nothing - Edmund Burke