Does he have flickering lights or just dimming lights?
Until he answers the question that was posted previously, then
do you really know?
In the meantime, 60 Hz AC leakage voltages can cause
problems with the power supply controller on motherboard on
some computers. I have seen it as previously posted. If you
don't why it can happen, well then you were not a digital
logic designer (IOW where does that leaking 60+ AC go?).
Instead of invoking the lord, look at the original post. He
asked if missing safety ground can cause computer problems.
The answer is yes. In addition to addressing the flickering
light problem (which was already done and apparently does not
occur when computer has problems), he also has a potential
problem that is described as quoted:
Could someone tell me if, not having any ground wiring in your
home could cause computer problems? My PC would just shut down
for no apparent reason.
Yes, a missing safety ground, in some cases, can also create
this problem AND cause hardware damage. Will you focus
blindly on the flickering lights and ignore all other
potential reasons for that computer problem? The flickering
lights possibility has already been addressed and is awaiting
further information from the OP. No reason for you to now
bring the Lord's Sakes into this discussion.
Yes that third wire is for safety. But some designs use it
to carry away the 60 hz leakage. You have never seen an Intel
USART destroyed because that leakage (120 microamp) 60+ volts
found another path when safety ground was missing? USART
damaged, in part, because safety ground was missing -
irregardless of the lord's sake.