When I switch on my computer I get a message no display signal then my monitor switches to standby mode.

I cannot reinstal the OS because it will not boot up that far

To date I have tried another monitor, graphics card, motherboard and processor all of which work perfectly well on another computer as do the parts I have changed off the troublesome computer but when assembled into the first computer I always get the same message

Any ideas?

Richard Matthews, April 2008

This problem could be either (a) a motherboard problem (check that heat sink on main chip is clear of all dust) so your motherboard isn't overheating -- or more likely (b) a power supply problem. (Check for dust in power supply fans as well) Then check all your power connections. Hope you can isolate it.

Bruce, June 2008

Can you give me pc spec details to compdoctor2005@btinternet.com **advice free**

Chris F, April 2008

you did not mention the memory ?
Have you tested that on another pc ?

Chris F, April 2008