I had a problem inside my computer where it wouldn't receive electricity, but then I got it fixed by putting a whole new part in. Now it won't work for more than a day or less at a time. If I unplug it, plug it back in turn the computer off, wait a couple hours, and turn it back on... THEN it works. How can I fix this problem once and for all??? I have dumped more than enough money into it and I am tired of it. PLEASE HELP!!!!!!!

Sounds like when your computer heats up, something expands and breaks connection. After it cools down. Everything contracts and makes connection again. Without knowing more about what was changed. If Desktop or Laptop. That is all anybody can tell you.

Hi, what kind of mac is it? I know that some Macs have that problem, strangley caused by a flat PRAM/CMOS battery.. my old imac had that problem