Periodically my computer switches itself off. I suspect there is a component in the PSU which is over heating as the PSU case feels warmer than usual.  The top of the computer case also feels the same where the PSU is located.

I’ve noticed when I’ve restarted the computer things begin to settle down,  the case of PSU begins to cool down and can remain that way for several hours, until the computer turns itself off again. I’ve removed one side of the computer to PROVIDE some EXTRA ventilation, even so this may not be enough. Is there anything else I can do?

I’ve been thinking of getting another MACHINE as the one I have is fairly old. Of course, it would have to happen when the country is in lockdown and all the computer suppliers are closed at the moment.

Thanks in advanceHi EdgarIsmael

What are the specs of your computer and what power supply do you have? if the power supply is the problem it is a bad idea to keep using the computer until you can get it fixed. Although it is unlikely to damage the hardware. Windows and your data could become corrupted with being POWERED down.
 
For a checkup you could download speccy from here  https://www.ccleaner.com/speccy/download
And go File/publish report and copy the link here
We should be able to get the Temps and power supply voltages from the report

You will need to supply the power supply model and make.   

Can you not get a powersupply delivered NON contact or do a click and collect.