If he is getting "no signal" that the monitor message for not reciving signal.
Try to use that monitor on some other computer, sometimes the problem is somewhere else then you think..
If the monitor works, continue reading:
Now you going to strip down your computer, part by part and testing if it works each time. (Turning it on each time for each step)
- Remove new hardware (if any)
- Disconect external devices (if any)
- Does your computer "Beep" or the LEDs flash in a strange way?
(Last one can pinpoint your problem, so just post here what it sounds or looks like)
- Check all your fans, see if they are working
(Non working could be causing overheat and or detecting a fan failure, thus making it fail to boot)
- Check all cables!
(Verify all cables are pluged in all the way~)
- Disconect all expantion cards
(Video, network, modem, anything else pluged in your mobo)
If your computer never changed the beeps, flasing or worked, this is your last hope:
- Remove all your RAM memory.
If your computer was not beeping and is now beeping turn off your computer and try the following:
Remember to power cycle and test each time.
- Re-insert the memory into the same slot.
- If you have more than one stick of memory remove all but one stick of memory, try rotating through each stick.
- Try one stick of memory in each slot.
If you're able to get the computer to boot with one or more of the sticks of memory it's likely you're dealing with some bad memory. Try to identify which stick of memory is bad and replace it.
If you're able to get memory to work in one slot but not another slot. You're motherboard is defective you can either workaround the issue by running the memory in a different slot or replace the motherboard.
- If you are unable to make it work anyway, your motherboard is RIP, go get a new one.
"Chile is a thin and tall country"