Acer Tc-780-Acki3 powers up but no signal

Have you disconnected the rtc battery to try to reset the bios? It's a silver coin-sized battery!

egydiocoelho said:

Have you disconnected the rtc battery to try to reset the bios? It's a silver coin-sized battery!

No I havent how do i remove it and for how long?

Remove this battery for a few seconds and then test:

egydiocoelho said:

Remove this battery for a few seconds and then test:

I removed the battery and to no avail still no signal

egydiocoelho said:

Remove this battery for a few seconds and then test:

Do you have a photo of the processor socket without the processor in it so I can make sure the pins aren't bent

See this here:

Image: https://us.v-cdn.net/6029997/uploads/editor/hp/khaqahffx3jn.png

Have you tried disconnecting the rams, hd memories and then go testing each hardware individually?

egydiocoelho said:

See this here:

Have you tried disconnecting the rams, hd memories and then go testing each hardware individually?

Yes I did that I need a photo with the processor bracket raised so I can see all the pins on the side as well just to make sure they match

Try a power reset! To do this, turn off the deskop and unplug it from the electrical outlet and then press the power button for thirty seconds and test!

thats not working either

egydiocoelho said:

Try a power reset! To do this, turn off the deskop and unplug it from the electrical outlet and then press the power button for thirty seconds and test!

not working either

When you turn on the desktop, do you hear any beep?

IIRC the processor is a ball grid array, so no pins per se. It shouldn't be possible to get it I sideways or reversed, but I may be wrong there.

is it possible my processor is blown, are they fragile??

It's possible, but not too likely. Usually if they are damaged due to handling it's static electricity that causes the problem and that often takes a while to manifest. If you disconnected the heat sink from the processor you need to replace the thermal grease that sits between them, but that won't cause immediate problems, the processor will just overheat. My guess is you didn't do that step, so will have to tear it down again anyway. Get some of the thermal grease, they usually come in a syringe type applicator and are good for several uses. Pull the fan back off and clean the surface that contacts the processor with some rubbing alcohol and a lint free cloth. Then remove the processor again and look very closely at how it's fit into the socket. It should really only work one way. Clean off the top surface of the processor with the same process as the heat sink. Put the processor back in place and clip it in, then apply a bead of the grease (the size of a pea or so) to the center of the top. put the heat sink back in place and fix it in. The grease will spread out and cover a good portion of the surface between the two components. That should get you to where you can be fairly confident the processor will work. Reconnect everything, making sure you don't miss any power cables, and fire it up then report back.

billsey said:

It's possible, but not too likely. Usually if they are damaged due to handling it's static electricity that causes the problem and that often takes a while to manifest. If you disconnected the heat sink from the processor you need to replace the thermal grease that sits between them, but that won't cause immediate problems, the processor will just overheat. My guess is you didn't do that step, so will have to tear it down again anyway. Get some of the thermal grease, they usually come in a syringe type applicator and are good for several uses. Pull the fan back off and clean the surface that contacts the processor with some rubbing alcohol and a lint free cloth. Then remove the processor again and look very closely at how it's fit into the socket. It should really only work one way. Clean off the top surface of the processor with the same process as the heat sink. Put the processor back in place and clip it in, then apply a bead of the grease (the size of a pea or so) to the center of the top. put the heat sink back in place and fix it in. The grease will spread out and cover a good portion of the surface between the two components. That should get you to where you can be fairly confident the processor will work. Reconnect everything, making sure you don't miss any power cables, and fire it up then report back.

I put thermal grease on already

When you inserted the processor, did you notice if it was keyed to only one orientation?

billsey said:

When you inserted the processor, did you notice if it was keyed to only one orientation?

how do you mean?????