PC auto switch on when i turn on the main power!

playboy_1985 SG

i know it sounds weird, but i noticed just yesterday that my PC will auto switch on itself after i turn on the main power (Not the power on/off of the PC). and when it loads to windows, the time/date settings will be wrong. what is wrong?? could it be the BIOS setting? i doubt so cause i don't remember go there or mingling with it. Please HELP!!

takahashi32399691 SG

The button sized battery (also used on calculators and watches) on your motherboard could have fallen off or run out of power. Without that battery, the settings (including the date and time) would have resetted to the default settings, unless you turn it off but did not turn off the main switch.

You need to open the casing to change the battery.

kenn3th SG

Your mobo battery is either

1) dead

2) came loose and is not connected properly

this explains the time prob.

Does the time/date change after every restart?

playboy_1985 SG

yar the date/time always change or reset whenever i reboot or turn on my com

eagle SG

no more battery for the internal clock liao... need to find someplace to change the battery if u still want the mobo

kenn3th SG

no more battery for the internal clock liao... need to find someplace to change the battery if u still want the mobo

can ownself change de lol.

Why let other people earn Unnecessary $.

kenn3th SG

yar the date/time always change or reset whenever i reboot or turn on my com

Steps to change motherboard battery

the battery will look like this. Fully pictured and detailed Steps will be here. (reading page one would be enough). Read page 2 / 3 if you cannot find your battery to be replaced.

http://www.hardwaresecrets.com/article/81

note: if your computer is still under warranty, you can send it down to the nearest service centre to be replaced.

this requires you to open your casing of your computer. Thus it might void your warranty if you open it up.

Negger SG

Hey, I have a similar case here too.

Now when I switch on the power switch of my other computer... The power supply fan cpu fan will on automatically without me pressing the on button of the computer... Worse part is nothing comes out from the screen.... So may i know is this battery problem too?

ndmmxiaomayi SG

Try replacing the fan. If not, the whole heatsink + fan.

Negger SG

hmm, any fan will do rite... Fan faulty ar?

Let me try and I will update here again...

Thanks...

ndmmxiaomayi SG

Remove your CPU casing and take a look. Don't buy too big or too small; some motherboards don't accept.

Negger SG

Wa... May I know Dell computer's cpu fan must use specific one ar...

I tried replacing but the socket doesn't fit...

Bad news Mayi, but now after i try replacing the cpu fan could doesn't fit...

Now when I switch on the switch... Instead on it auto on with no screen or anything...

It just off within seconds... Meaning, the fan for cpu n power supply stop after seconds... The motherboard still got green light...

What it means ar... Please dun tell me cpu spoil... I will faint... haha

Sysan888 SG

Hi,

I have a similar problem. My pc starts up by itself everyday at 12 midnight without fail !! I have checked the pc clock, it works okay, no reset done.

Now I pull out the mains plug before 12 midnignt. But next morning, when I push

in back the mains plug, It starts up immediately, without my pressing the on/off

button.

Pls help and thanks

playboy_1985 SG

sounds like ur PC is haunted huh.. haha.. but actually like what the others say, could be due to cmos battery faulty..