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No image input and pc makes weird sounds on start up

\015 Hey guys, please help me out on this. For some reason, my pc wont start up anymore. When I press the power button I get a different sound than normally. Now I hear one long tone and then 2 short ones. After that, I can see the floppy drive running some test, like normally, but nothing else happens. There isnt even any HD activity.Solutions are well appreciated. I need my pc working again for my graduation!!! Thank you\015\012\015\012\015\012\015\012At startup, monitor light is orange - no image on monitor -, computer sounds as though its loading but after a few minutes, it screams a series of beeps. Was working until shutdown and when restarted, the above mentioned happens. HELP! Have chaged out processor and no change. Will try replacing RAM sticks next.\015

Answers :

Remove & reinstall all the memory sticks (reseat). If that did not fix the problem, remove all the memory sticks and reinstall them one at a time to test them in an effort to determine if one of them has gone bad. Use this same methodology to test all of your device cards.
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\015\012Check to make sure the CPU fan wire is connected to the fan header on the motherboard and that the fan is operational. Most motherboards (especially AMD) require the CPU fan to be operational and connected to the motherboard to avoid frying the CPU. However, this requirement can be disabled in the bios to accomodate CPU fans that do not run off of the motherboard fan header.
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\015\012Can you get into the bios? If so, I would suspect the CPU and memory are ok. Does the clock have the right time? If the time on the clock is wrong it could indicate your bios settings are not being maintained after you power down and you may need a new CMOS battery.
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\015\012Usually a beeping motherboard is an indication of a hardware issue. The data on your hard drive is probably intact. If you need to retrieve some files from the drive for your graduation, you can always install the hard drive into a USB external hard drive enclosure and connect it to an oprational computer.
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\015\012Hope this helps - good luck!
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