Originally Posted by Abstract Hero
1. spell and grammar check. I'm fading in and out of what appears to be sentence fragments in your posts.
Edit: sorry not fragments word jumbling and sentence structure. I get it now. but continuing....
2. He gave you a diagnostic. Use another monitor to see if its your monitor failing. If not it's probably your onboard.
3. If it's truely 15yo you can scrounge up 10 bucks in your couch get a newer but still old crappy monitor but still see a huge difference. Atleast until you got something decent.
You never said offer you ideas on choosing a new flat screen and your lacking of any true information besides "sometimes my monitor goes black and my gear is really old!" makes it hard for people to help.
Couldn't have said it better myself.
Originally Posted by smurph
After PC is on with monitor off, when I arrive home from work and turn it on, after a short period the screen slowly turns black, indicating to me that the it is due to overheating of the mobo, any ideas?
Your PC is on all day. You turn the monitor on and it slowly turns black.
In your second post you said you turn the monitor on and it worked all night, so which is it?
This does not sound like a video card issue, it sounds like a monitor issue. The only way to be sure of which one it is would be to test the monitor or motherboard. To test the monitor you need another computer, video card, or motherboard with an IGP. To test the motherboard you need another monitor.
If you buy another monitor and the problem still persists then the problem was with the motherboard. If you buy a motherboard and the problem still persists then the problem was with the monitor.
The least expensive path would be to get an old CRT monitor from someone, or buy one from a refurb shop. It would also require less labor because you don't need to remove anything or change any of the parts. This is why I recommended buying another monitor and plugging it in.
Take your pick.