Computer won't power on... Please, please help.
I have an old computer (P3 933 MHz) that my 3-year old uses. My computer recently died as a result of the power supply frying the mobo, so I purchased a new desktop. I wanted to have access to some of the files on the hard drive from my old desktop, so I installed it as a slave in my son's computer.
I installed it, booted it up... no problems.
The cover was still off of my son's computer and I decided to take a look to see if the memory from my old computer was compatible. Bad decision... His computer has 256MB RAM with an open second slot. I pulled out his memory to look at the slot and saw that the memory from my computer wouldn't fit. So I put the memory back in his computer and then powered it on and the fans spun, but the power led didn't illuminate and the hard drive wasn't spinning, though the hard drive led briefly flashed as did the CD-Rom led. The monitor displayed a blank screen. Generally when I boot his computer, the Dell logo appears right away and then Windows 2000 boots up. The Dell logo did not appear.
I have reset the memory three or four times, so I know it is sitting correctly. I have disconnected and re-connected the hard drive in the original configuration. I took out the CMOS battery and reset it. I don't know what to do? Any advice would be greatly appreciated.
Note: I bought the computer for $120, so I don't want to put any significant money into it. I will just go onto Craigslist if I have to and get a comparable machine for $100 or so.
Many thanks in advance,