This is my first post and I have limited knowledge of computer hardware so yall be patient with me please. My computer was RUNNING fine and then the electrician turned off all of the POWER before I could turn my computer off. When I tried to start it BACK up it started and gets to the screen where it says Pentium 4 and then locks up. I was able to get it to go into the bios screen once but after I exited the bios it froze up again I tried to reload windows and thought that it might repair whatever was broken but it doesn't recognize my cd drive. Anyone have any ideas on what to do next?

Thanks

Robertis your CD drive set to BOOT first in the CMOS boot order?   Go back into CMOS and check the boot order of the drives....be sure the CD drive is set at the top of the list of bootable drives...I was trying to do that but I haven't been able to get back into it. It says "entering setup....." but never does.you should open up your computer and check to see if there is dust build-up.....Something is probably overheating..   What does it look like inside your computer?

Look closely at the heat sink on top of the CPU....The silver thing on the motherboard with the fan sitting on top of it...   Is there a lot of dust in it?

generally speaking...if there is a lot of dust, you need to get a can of compressed air and blow out the computer, paying special attention to the CPU heat sink, the power supply vents, and the vent on the front of the computer....you'll have to pull the front cover off the computer to verify if the intake vent is free of dust, blocking itI will take a look at that when I get to the HOUSE. I have to use my work computer until I can get it fixed. Would that make it not boot? IT ran fine until he shut the power off.That sounds like a dead CMOS battery.  They're easy to replace.
With the computer turned off, and yourself grounded do the following.
On the mother board look for a nickel sized round battery.
Take the battery out and replace it with a new one.
If I remember right it's a CR-2032.I'll look at that too. Thanks.No problem, let us know.  Welcome to CH.