SOURCE: gateway gt4016 problem
Check your monitor on another computer. If it is ok connect it to your bad computer. Open the CPU case and unplug all the data cables and power cables to HDD, floppy and cd/dvd. Remove keyboard and mouse. also remove pci cards if any. You didn't mention about video card. I guess it is onboard. Now put it on an see. If nothing happens blame the motherboard.
SOURCE: No display and wont boot
A Blinking Amber or Yellow power button means that the power supply is receiving power from the source but is unable to properly distribute it to the components. This can be caused by a defective power supply or a defective motherboard. Power supply is easier and cheaper to replace.
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SOURCE: computer wont boot hear one beep from motherboard over and over
If your power supply is bad, there is typically a much cheaper way to fix it rather than purchasing a new one.
If you know a little about electronics or know someone who does have them open up the power supply and check the capacitors. Often times when a power supply goes bad its the result of capacitors going bad.
If you notice on the ends of any capacitors a brownish/whitish discharge or "bulging" then the capacitor has gone bad.
A new one typically cost less than a dollar and replacing it is fairly easy if you know how to solder.
Let me know if you have anymore questions and hopefully if this is the case you can save some money.
SOURCE: Asus A8M2N-LA MOBO fans spin but no beeps or anything else
try by switching on the comp.without ram ,check weather the motherboard gives any beep
If No then take out motherboard from chassis ,and try to power on the comp. with some barrier bet chassis and mother board
SOURCE: Dell Inspiron 530 won't start up - is motherboard dead?
From your description, I agree with you assessment of a likely Motherboard failure.
One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect your hard drive
Test all leads that attach to your hard drive including electrical extensions,IDE,SATA
the leads from your motherboard to your hard drive make sure they have a secure connection and are not faulty or just replace them there probably old and faulty
hope this helps
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