I have a HP Media Center m7640n. Went to turn it on and cannot get it to boot up. It has power and the fan comes on immediately. However, I get no screen on the monitor and the computer fails to go through its normal start up. Have checked the monitor and it seems to be working correctly. It has no video input signal detected from the computer. Any suggestions?
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Re: Start up problem
I've checked your media center model on the net and it appears to be a known BIOS problem. Keep in mind that this is most likely video card or motherboard failure. But we can try resetting it
Try booting into the BIOS using the F10 key and then pressing F12 and pressing y. The system should reboot with the default BIOS settings. If there is any change you likely have a good chance at fixing it. Please post your results.
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You have to check with your RAM sir, if you know to remove the side cover of your CPU(tower) there will be a green colored chip fixed in vertical position in the motherboard if remove it and then fix it properly means you will get the display in yur screen.i will show you the RAM picture
It could be a power supply, but it could be a number of other hardware components too. A new power supply is less than $50, you can get them at Best Buy or Newegg.com. Any computer place can install it for you. I suggest you take it somewhere to make sure the power supply is the problem.
OK, this can be a hard thing to fix. Most of the time, the power supply is the first thing to go on a PC. However, when you stated that the motherboards LED came on after you unpluged the PS from the motherboard, it leads me to believe that the motherboard is the issue but the power supply might be outputting higher voltages and the motherboard might be shutting down. Since the power supply is cheaper then most motherboards, I would recommend getting a new one. Check ebay for a new power supply. It should be about $20 with shipping. If the same thing happens, then you need a new motherboard...
First thing to do is try to plug the pc in another wall socket to see if it goes on, If not, the MB could have gotten fried, even though the other plugs seem to work. Hopfully you just need another surge protector as that could have gotten damaged.