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Re: When I turn on my computer nothing happens but the...
A lightening strike!!!!!! The power surge from a strike could have blown the computer's motherboard and processor. Did you have any surge protection and was the computer on at the time? chances are the computers fried. There is one last thing you can do, that is remove the side panel from the desktop so you can see the motherboard, you will see a battery like this >>. Near to the battery you will see a plastic "jumper" this will reset the cmos if you move it to the other position, turn the pc on, if nothing happens the cmos has been cleared, put the jumper back in its original position and start the computer again, if you still get nothing them some if not all the components inside the computer has been fried.
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Your computer is not completely booting (it's failing the POST). You need to identify the problem by disconnecting everything but the CPU, video, and memory. See if you get something displayed on the screen. If not, there is a good chance the problem is in the video card. Just to be sure, if you have 2 sticks of memory, take one out and try a boot. Then swap sticks. The monitor is blinking yellow because it's not getting a video signal.
There are numerous issues that could cause this but if absolutely nothing happens, no lights, no fans, nothing then check the power supply. Use a simple voltage tester to see if you have any voltage on the connectors going to the hard drive and cd/dvd drives. If not this is a pretty easy and relatively inexpensive fix. You can e-mail me at firstname.lastname@example.org for more help.
powersource is good.motherboard might be the problem.harddrive can be tested by putting it in another computer and see if it boot up.to test the mother board unhook the cd drives and harddrive.turn on the computer and see if the gateway logo comes on.if it still does the the samething with everything unhooked then it might be the bios.you might have to flash the bios and reinstall it.to do this i recommend you take it to a shop.if the comp runs with everything still unpluged and stops then you know that you have a wrong setting on the harddrive or cd drive.if you got two of anything make sure that you have a slave or master.if you nned me to write a guide email me at email@example.com or if you got anymore questions.
pull out everything in the computer except what's required to boot...so any pci cards or video cards (if you have onboard video). you can also try pulling out the ram (while unpowered AND unplugged) and then booting to hear beeps...if you pull the ram out and the computer doesnt make a sound, its probably a bad motherboard and needs to be replaced. if you hear beeps, try replacing the ram or disconnecting other parts...like harddrives, optical drives, modems and what not.