My monitor goes black for few seconds (.5-1 sec) ? Why?

hi ragpoor, this is a problem that has effected a lot of people in their computers so bad news my friend if you have plenty of circulation in the back of your computer than the motherboard is not working correctly. that is why there is a saying buyer beware. now if i had my way i would wave a magic wand and your computer would be fixed but sadly to say i do not possess magical powers and i am sad to say there is no quick fixes to fix these problems. other than the hard drive is bad. i do not recommend this for most people but i would consider replacing your computer with a better mobo yours is getting ready to take a power. i know money is tight for everyone but it is nothing that you can do. sorry you are having this problem. good luck hope i was helpful to you