As other said there is no virus named "hamster".
What's this?:
Hamster Removal Tool. Remove Hamster Now
This doesn't look like it would take out a monitor, CPU board, or a power supply.
Switching power supplies can deliver unlimited current, up until the point where they fail. If the voltage drops on a line; they will switch faster, to bring the voltage back up to spec.
All of the modern PCs that I've seen, have an IC that monitors for overcurrent protection. Also modern switching power supplies have a control line; and they must receive a signal from the motherboard to continue running. These two features work together to protect the motherboard and the power supply. However, they are not foolproof.
I'm supposing here; but if the power supply drifted, and began producing a higher voltage, it might have taken out the monitor first. In the process of one of the board level components of the monitor shorting out, before it opened up; it might have stressed the, already failing, power supply.
The protection circuit might have engaged at that time, and shut the system down.
Thereafter, when the computer was turned back on, the power supply might have worked briefly before it failed completely, having been stressed while it was already on its' last leg.
At this point, if it were mine; I would disconnect the power supply and test it by itself. However, I would not try to walk someone through this procedure; unless they had experience as a bench tech.
The best advice I could give,
is with the power supply unplugged open up the case to the power supply.
Switching power supplies are very dangerous; because they can deliver unlimited current up to the point where they fail. They can burn the skin off of your hand.
Visually inspect it for any swollen capacitors, or any burn marks. If any of these signs are found; assume the power supply is toast.
If it's bad; be careful ordering a new one. Some companies take a standard power supply and switch up the pinout on the connectors, to make the power supply fit their proprietary configuration. Make sure you get a power supply that will work with your model number.
Some things are just best to be left to those with training and experience.