moitor problem

hope someone will reply soon enough so that i don't have to purchase a new computer

Hello jmurlay and welcome to Tech Support Forums

If you would be kind enough to post what type of hardware you have I'm sure someone would be glad to help you out...

I had a slot1 p600 that did that occasionally. I would take the cover off the case, pull the cpu out, pull the vid card out, pull the memory out. Blow it all off including sockets and put it back in- and it would work. It would happen any time I moved it or if my wife vaccumed the floor and accidently bumped it. I'ts worth a try and is a cheap test!