Recently the power supply on my computer fried. We switched it out with another from one of our older computers and it works... Not completely though. When we turn it on Windows loading screen doesn't show. It's quite frustrating to me and my dad and we're miles away from those we usually go to for help. Can anyone please tell me how to fix this?
 
HI

Are you able to check that the hard drive is spinning you can do this by listening to drive. If not check the hard drive has a power cable direct from the power supply not from a tap off like for a fan or another drive.   

You don't say what you are seeing on the screen if anything at all

Also some DETAIL on the computer and power supply would help as well

Also what do you think caused the power supply to fail ?

Thanks
  When the computer is on the monitor stays black. Yes, the monitor is on.

The hard drive is spinning.

The new power supply is an Allied
Model: AL-A300ATXREV:B
Maximum wattage is 300 watts.

The original power supply was from Tiger Pro, we've been using it for the past 10 years.
Model: LC-B350ATX
Maximum wattage is 350 watts.

We've had the newer power supply for about 4 years but haven't USED it until now.

As for the tower, the mother board is from ASUS along with 3 HDD cables. There are 2 Western Digital hard drives, one using a ASUS cable, my dad removed the second, the cable is a Sata.


The power supply probably failed from over use. We're a family of six, with all of US having to use one computer.


I thank you for any and all advice.Hi

I'm sorry but the original power supply when it failed could have done quite a lot of damage.

Also as the computer is 10 years old, I'm assuming as the original power supply is, there is LIKELY to be other problems with the computer.

I appreciate there is no one handy to fully diagnose the computer, in this case before you spend a lot on parts I would recommend having someone diagnose how much of it is damaged so you can make a better decision on what to do next.

If you have a digital camera and could post some pictures of the motherboard I could see if there was any visual problems.

A wild guess but it has caught me out before.
(If it is an older P4)
Then make sure the 4 pin black and yellow connector is securely plugged into the board, and reseat any RAM that is in the machine.
Also try the machine with only one stick of RAM.

I just checked both supplies online and I cannot tell if the newer one has the extra p4 connector or not.
The connector looks like this

It may not be in the same location as that board has it.