Hi,
Welcome to Fixya. If the red light is flashing it basically means that there is power. Do you hear the fan of the processor spinning but the monitor won't display anything? If
YES, then we need to check if the problem is either the
Video Card,
Video cable or the
RAM (
Memory).
Check Video Card and Cable:
If you have an idependent graphic card can you try to swap the video cable if it is connected to the graphic card then trasfer it to the onboard card and vise versa to check if you will be able to see the display. You can also try to switch the monitor to check if the problem is LCD.
How to check RAM or Memory Module:
If you can open the side panel of the system and swap the memory module to a different port and see if it will work or if you have a spare memory module that is
PC3200 or
DDR 400 MHz try to replace the existing one to check if the cause is the memory.
If you try to power the system but the fan fan on the processor is not spinning. This indicates that the problem relies on either the motherboard or the power supply.
If you have questions please let me know.
Thanks for using Fixya.