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Try connecting the monitor to a friend's computer. If you get some sort of a display it's not the problem. When you say that the computer makes a new noise like the fans are spinning fast, you might have an issue with the video card , motherboard, or power supply.
A cool heatsink points to a CPU failure, as the CPU is not processing data. Replacing the CPU at first would eliminate this, however, the CPU is unlikely to fail first unless it had been severely overheated, more likely that the board has developed a fault.
If you are however getting no beeps on start up, this does look like the CPU is the culprit
If the green light comes on on the front panel then it means the fan is spinning so what u can do is a self test for the monitor.Disconnect the vga cable from the back panel of the computer tower and then check if there is a message displayed on the monitor that should say check video signal or no inoput signal ,if there is no such message displayed then it means the monitor is a fault .If not then reset the memory card and then check .U can also run a test for the motherboard to do this u will have to remove the memory card and then turn the computer on if u hear long beeping noise it means the motherboard is fine .If u dont hear any sound then the mother board needs to be repaired or replaced...
Fist touching anything on the motherboard without a anti-static strap can kill the motherboard.
The fan running at full speed is no big deal. If you took out the video card how do you expect to see anything on the monitor.
You need to plug the monitor you have into a working computer, this will rule out the monitor. If the monitor died, you did all this for nothing.
Now unless the motherboard has onboard video you have to put the card back in, if it does have onboard, even without the drivers installed you still see the post, because windows will let it run at post, and with the video card, it will still show post without drivers.
Do this,check monitor, try both ports and post back and tell us whats going on.
Solid Amber Power LED is indicative of a Motherboard failure. Replace the motherboard.
The GX280 is one of many motherboards made during that time period that may have had capacitors that could fail due to a manufacturing defect if the capacitor. Check the capacitors on the motherboard to see if the tops are popped (there is a X engraved across the top of each capacitor, it the X is open, then the capacitor is bad.)
The “self test” on the monitor displays when not plugged into a computer. This means that it’s working. The LED error code 2 and 4 means the video subsystem has a problem. Either your video card is bad or bad memory module. Try reseating video card and/or memory. Your responses are intended to improve the level of service provided. Please show your appreciation by rating your experience. Thank You.
dell xps 400 pentium d once i turn it on, it beeps and says "card cage fan failure" everytime i press f-1 to continue it shuts off and boot up again it does it everytime how can i fix this CARD CAGE FAN FAILURE??