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alexhob123 said:

no it's when i flick the swtich off at the plug that it is plugged into after i shut it down then it does it after i turn it back on if i want to go on it again. i do turn it off properly of course via start, power, shutdown my brother thinks it something to do with the battery he is going to check tommorow

As has been said like 5 times already, replace the cmos battery. Do not let your brother near it anymore if he thinks 3 years old is brand new, and also, especially also, if he thinks the wall power outlet can drain the cmos battery.

Now ive heard it all...

that's what he is going to do replace the cmos battery

steve108 said:

Nonvolatile BIOS memory - Wikipedia

"This cell battery has an estimated life of 3 years when power supply unit (PSU) is unplugged or when the PSU power switch is turned off.[7]"

From reference 7:
"A coin-cell battery (CR2032) powers the real-time clock and CMOS (complementary metal-oxide-semiconductor) memory. The battery has an estimated life of three years when your Intel® NUC isn't plugged into an AC power source. When the computer is plugged in, the standby current from the power supply extends the life of the battery. The clock is accurate to ±13 minutes/year."

So yes, unplugging or switching off the AC to the PSU does shorten CMOS battery life - his brother is correct.

The power plug does not drain the battery, as was said. Leaving it unplugged, where it then has to use the CMOS battery instead of standby power shortens it only because its actually being used.

Semantics my good sir.

steve108 said:

Nice play on words. No AC causes the battery to discharge/drain - however you want to slice it.

Same as your cell phone when you unplug it and make it use the battery. Not a play on words, its a simple concept. Take care

i just turned my computer on from the switch and it didn't turn off and back on think i found what the problem was the plug wasn't plugged in properly for the main computer not the screen it was not even pushed in fully. maybe not just did it again

alexhob123 said:

my brother said my pc is brand new so he has told me not to do anything it might not come up in the future

- - - Updated - - -

what i am doing is leaving the 4 way power plug on but turning off the screen he thinks that the 4 way power plug i am using might have drained the battery but i don't know if this is right or not

The battery we're talking about is the BIOS battery (looks like a coin) on the motherboard. You don't drain that battery by leaving your PC plugged in. If your PC is new or nearly new, then the BIOS battery is unlikely to be the problem.

Your motherboard may be defective.

were going to try and change the battery first to see if that's the problem then if it isn't that we may look into it