You might try reinstalling windows with the recover cd or windows cd provided by dell. Turn the PC on and insert the disk.Then turn the PC off, wait a few seconds and then turn it back on and boot from the cd.If you get the lights and monitor initially, then I wouldnt think there would be a problem with the power supply. Also check and make sure that the hard drive power supply is connected. Just a few things that may help......
Please help. I have a Dell Dimension 4100. Just installed new ethernet card, that went fine. Went to install additional memory and had the wrong type. Well, bro-in-law thought he would help and tried to put the memory in anyway and start it up. System tries to start up then does nothing. I catch him and look in the case. The new memory is not really seated correctly (because it's the wrong kind!!!!!)
I take out the wrong memory and try to start her up. I get initial lights, etc, monitor, then nothing. You can hear one fan running but I get nothing else. I'm going to replace the power supply first and go from there.
Now I'm wondering if my bro-in-law could have shorted out my motherboard with his shenanigans.
Any suggestions?

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