do you use anti-glare screen in your monitor?

or not.

where? it went along with something else hum? it happens for me also.

You can reduce computer monitor glare with a good quality anti-glare filter. Anti-glare filters come in two frame designs - flat or wrap-around. Which frame you choose depends on your monitor style and personal preference. For a proper fit, measure the viewing area diagonal of your monitor before you buy - this is how you determine the correct size. Make sure that you clean your computer screen with a recommended cleaner or wipe before installing your filter.