If your systems monitor doesn’t turn up when you turn on your system, then their might be a problem with your systems Graphics card. For example assuming you have an AWARD BIOS and are getting one long beep and two short beeps, this would indicate a probable problem with the graphics card with a less likely possibility of a fault in the memory.
Sometimes the problem can be simple loose or dirty connections. If you suspect your problem is hardware related, this is the first thing to check. If the problem persists, try the following :
1> Check the connections – Do this by replugging the card into its socket.
2> Replacement – If you are fortunate enough to have a functional graphics card handy, peraps from an earlier upgrade try installing this. If you don’t have another card, consider going out and buying the cheapest one you can find, as substitution is the only way to be really sure.
3> Resource Conflict – You could have a situation where by your graphics card is OK but is being prevented from working by another hardware device which claiming the same system resources. The usual method of sorting out this type of problem is by using the ‘Device Manager’ in the ‘Control Panel’. This however, requires access to Windows, which in this situation you obviously haven’t got. What you’ve got to therefore, is one by one, physically remove every device in the system, restarting each time and seeing if the PC now boots. If and when it does, then the last device removed will be the culprit. Once back in Windows go into the ‘Device Manager’ to resolve the issue. You’ll have to do it using the resource Conflict Troubleshooter.