Solved System double starts when I press start button on PC

I recently noticed that when I start my system (when it is off) by pressing the start button on the computer it starts up then everything shuts down for a few seconds (timed: five seconds) and then resumes starting and everything is normal: boots up fine displays the option to go into bios then OS starts and everything is normal.

Any ideas what causes this and how to fix?

Thanks in advance

System specs:

Antec P182, Antec Signature 650 PS, Intel DP45SG, Kingston Hyper X 4GB (2 X2) DDR3-1333, CPU: Dual Core Intel Core 2 Duo E8500, 3.16 GHz (9.5 x 333), Video:Saphire 4850 I GB, Samsung SyncMaster 2443 BW, Disk Drive:Seagate 250 GB-SATA, 2 Optical Drives: Asus DVD-18 X 48, TSSTcorp CDDVDW, NEC USB Floppy, Realtek USB 2.0 Card Reader

Vista 32-bit SP1. Current BIOS 108

I have a similar thing with my system. But it happens only after the power to the PSU has been cut totally for a while. I have my computer and LCD plugged into a power line that I can turn off totally using a switch (which I turn off when the system shuts down). But last night I left the system working for a while and after downloads has been completed it automatically shutdown itself (that way power to the PSU has been flowing all that remaining time). When I woke up today and turned the system on it started right away, without this "double start" thing. But I'm also curious why this is happening. I also tried to power the system on after about 15 minutes since I restored the power to the PSU... and it still "double started".

Re: System double starts when I press start button on PC--Fixed

Well, I fixed my problem. I had my memory over clocked from 1066 to 1333 ( no other overclocks) .When I set it bak to defauls: automatic in Bios, no double pumps.

I assume most of you would agree that double pumping is NOT as good idea?

I have had a similar problem since a complete recovery was necessay. Not exactly the same, but...

when I switch, or restart, or hiberate, upon restarting it gets to the Intel splash screen then hang forever. I key off then on, and it continues to start fine.

At that time was when i began serious backups it was probably going to crash and lock up again..for good

HawkeyeLOM said:

I recently noticed that when I start my system (when it is off) by pressing the start button on the computer it starts up then everything shuts down for a few seconds (timed: five seconds) and then resumes starting and everything is normal: boots up fine displays the option to go into bios then OS starts and everything is normal.

Any ideas what causes this and how to fix?

Thanks in advance

System specs:

Antec P182, Antec Signature 650 PS, Intel DP45SG, Kingston Hyper X 4GB (2 X2) DDR3-1333, CPU: Dual Core Intel Core 2 Duo E8500, 3.16 GHz (9.5 x 333), Video:Saphire 4850 I GB, Samsung SyncMaster 2443 BW, Disk Drive:Seagate 250 GB-SATA, 2 Optical Drives: Asus DVD-18 X 48, TSSTcorp CDDVDW, NEC USB Floppy, Realtek USB 2.0 Card Reader

Vista 32-bit SP1. Current BIOS 108

Click to expand...

This is normal behavior and nothing to worry about. It can happen after your PC has lost power completely. The motherboard is starting up, checking some clocking settings, then restarting to synchronize everything according to the new settings, if necessary. Totally normal. It scared the crud out of me until I discovered the cause, though! I thought my mobo was dying.

neiby said:

HawkeyeLOM said:

I recently noticed that when I start my system (when it is off) by pressing the start button on the computer it starts up then everything shuts down for a few seconds (timed: five seconds) and then resumes starting and everything is normal: boots up fine displays the option to go into bios then OS starts and everything is normal.

Any ideas what causes this and how to fix?

Thanks in advance

System specs:

Antec P182, Antec Signature 650 PS, Intel DP45SG, Kingston Hyper X 4GB (2 X2) DDR3-1333, CPU: Dual Core Intel Core 2 Duo E8500, 3.16 GHz (9.5 x 333), Video:Saphire 4850 I GB, Samsung SyncMaster 2443 BW, Disk Drive:Seagate 250 GB-SATA, 2 Optical Drives: Asus DVD-18 X 48, TSSTcorp CDDVDW, NEC USB Floppy, Realtek USB 2.0 Card Reader

Vista 32-bit SP1. Current BIOS 108

Click to expand...

This is normal behavior and nothing to worry about. It can happen after your PC has lost power completely. The motherboard is starting up, checking some clocking settings, then restarting to synchronize everything according to the new settings, if necessary. Totally normal. It scared the crud out of me until I discovered the cause, though! I thought my mobo was dying.

Click to expand...

I do NOT agree with you that this is normal behavior---I think it is a bios bug and should be fixed.

It's not a bug. This is expected behavior with some motherboards. This was explained to me by a BIOS engineer. It's simply the BIOS re-synchronizing to various on-board clocks after loading BIOS settings. If it only happens after power has been disconnected, it's not a problem. Now, if it's happening every time the PC boots then there is a problem.

"Now, if it's happening every time the PC boots then there is a problem."

It was happenning every tine I booted my PC after shutting down from the OS---32 bit vista Ultimate.

HawkeyeLOM said:

"Now, if it's happening every time the PC boots then there is a problem."

It was happenning every tine I booted my PC after shutting down from the OS---32 bit vista Ultimate.

Click to expand...

Yeah, that's not expected behavior if you're simply rebooting. It should only have to do the double-boot after power has been removed from the PC. Or perhaps the battery on your mobo is dead. If the board can't remember the clocking settings, it would have to double-boot every time.

Also, I should mention that sometimes a re-sync is not necessary if the new clock settings are similar enough to the settings expected by the mobo. That's why yours was not doing it at default settings, but it was doing it when you overclocked it. The mobo would start up, see that the configured settings were significantly different, and would restart to resync to the new settings. No problem at all and totally expected, but I'm fairly certain it should only do that when you mobo loses power completely. That's what makes me think you have (had) a bad battery.

neiby said:

Also, I should mention that sometimes a re-sync is not necessary if the new clock settings are similar enough to the settings expected by the mobo. That's why yours was not doing it at default settings, but it was doing it when you overclocked it. The mobo would start up, see that the configured settings were significantly different, and would restart to resync to the new settings. No problem at all and totally expected, but I'm fairly certain it should only do that when you mobo loses power completely. That's what makes me think you have (had) a bad battery.

Click to expand...

I do not believe it is a bad batter, because the bios remembers other setting when I change them, and others with this board report the same problem when overclocking ram. The system is only 3 1/2 mothns old.

If the bios battery were bad, wouldn't the bios not remember saved settings? BTW, the double pump happened from a cold boot, power cord pluged in and power switch on PSU set to on.

Hmm... when I was researching this issue when it was happening to me, I ran across some people who experienced something similar and they seemed to have luck fixing it with a BIOS update. It sounds like it was just re-syncing more often than necessary. If you want to try overclocking it again, I'd try updating the BIOS first. If it continues to happen, look for a user forum for your motherboard. They might have some answers for your specific board.

guys, its nothing to do with your bios, if complete power is cut off, then your clock settings in windows would be reset if there was no power getting to the bios, thats what the battery is there for, diagnostics are done during the post screen and is done everytime you start your system up, regardless what motherboard you have. if the bios has no power and the battery is dead, then if you unplug your system, it just defaults the bios settings to its original state when you got the motherboard out of the box, nothing changes with startup behaviour.

MrNeeds, I'm talking about CPU/mobo clocking, not the PC time clock. I have discussed this behavior with a BIOS engineer before because I was concerned about it. My mobo does it even when set to default BIOS settings.

Thnx for this thread guys.
I just build a new system last week and experienced the same problem.
I took my chances on a new motherboard-battery and no double starts anymore!
Feels much better now when I start up my pc

Greetings Nees