Graphics card problem

Try to update your drivers for your graphic card and see if that helps, but my guess is that your screen dosent suport higher mz than 60, everything above that will get you screen blurred or black.
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Good luck!

Download and install the latest driver software for your video card to make sure that's up to date. Then make sure you've got the right monitor type specified and you should have the right choice of resolutions and refresh rates. If the particular monitor you have is not offered as a choice by your operating system, you can usually get specifications from the manufacturer's website. Then pick a generic monitor type that offers the highest refresh rate the monitor can handle.