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reboots compaq presario F500

post #1 of 22
4/26/08 at 6:47pm
Thread Starter 
Hi i'm new here so please about lenience.

So problem is following. I have notebook which reboots after exactly 25 sec after power button pressed.
When I turn on this computer cpu fan works and the led blinks. Screen is all the time blank.
I think that it's problem with mobo but what is wrong with this mobo?
Does somebody have any idea? Thanks for reply.
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post #2 of 22
4/27/08 at 1:59pm
Ouch! That the screen remains blank for some 25 seconds into the boot up, would suggest a hardware, probably motherboard (again, based on the sequence, I doubt hard drive, though maybe memory?), issue versus say an OS problem.

Maybe qhn or INFO[NOS] might have some specific ideas?
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post #3 of 22
4/27/08 at 4:06pm
. beeps?

cheers ...
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post #4 of 22
4/27/08 at 8:21pm
Thread Starter 
Quote:
Originally Posted by qhn View Post
. beeps?
no, just no.. it's so strange. it's in 90% mobo, only what in this mother board?
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post #5 of 22
4/28/08 at 8:14am
there r 2 things i would personally look into before writing the mobo off:
. cpu
. cmos battery

cheers ...
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post #6 of 22
5/1/08 at 6:30am
Thread Starter 
i bought new mobo just from compaq dv6000. so i check what is wrong.
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post #7 of 22
5/1/08 at 11:20am
cool, dont forget taking loads of pics and share with us

cheers ...
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post #8 of 22
5/3/08 at 8:19am
Thread Starter 
hi, thank's for interested. So i installed new mobo in my notebook, but now i have another problem with audio. I don't know what is wrong because I installed drivers and with drivers is everything okey, in device manager is also everything okey, but I can't hear nothing. It's so strange because I can hear system speaker. In other systems eg. Linux or FreeBsd is the same.

Somebody know what's wrong?
Cheers!
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post #9 of 22
5/3/08 at 9:58am
u might want to update xp (if u have it) to the latest stand, and search for kb888111 patch (might apply to ur issue). Chipset driver installed?

cheers ...
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post #10 of 22
5/3/08 at 11:10am
Although I dobut that is is this, try your headphone jack and see if you get sound that way...not likely if your system speaker/notebook speakers are one and the same, but that is not always the case, sometimes the system speaker is a little button-speaker on the board!

Now, if you are showing everything OK in Device Manager, and Linux also does not work with it, then perhaps your speaker cable is not completely connected, or something of that ilk? After all, since you replaced the mobo, I'm sure that you had that all un-plugged/re-plugged, and some of those little connectors are easy to not quite get...or the wire gets "pinched" when putting everything back together.

Though qhn may be right about the chipset drivers, I kind of doubt it if everything shows okay under Device Manager, I would've expected the dreaded Y.E.P. (yellow exclamation points!)
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post #11 of 22
5/3/08 at 12:02pm
Thread Starter 
Quote:
Originally Posted by qhn View Post
u might want to update xp (if u have it) to the latest stand, and search for kb888111 patch (might apply to ur issue). Chipset driver installed?

cheers ...
I'm using SP3 so I don't have to install and I don't have Y.E.P.. System speaker and notebook speakers are one and the same. In headphones i don't have sounds too.. I'm tired
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post #12 of 22
5/3/08 at 2:00pm
Well, since you are getting system sounds, I guess that eliminates a wiring/cable type issue. Since you also can get no sound while using another OS, this really is getting confusing...
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post #13 of 22
5/3/08 at 7:56pm
Thread Starter 
So guys i solve my problem. It was unplugged cable of front panel..it's this where are headphone and mic jack.
I'm interesting yet why my computer with new mobo starting sometimes in two once sometimes longer - is it maybe by cmos battery? And almost always with laptop battery don't want start.

Thanks a lot, cheers!
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post #14 of 22
5/4/08 at 10:34am
Quote:
Originally Posted by dziorki View Post
... my computer with new mobo starting sometimes in two once sometimes longer - is it maybe by cmos battery?
doubt that CMOS batt has anything to do with slow startup. might want to review ur startup processes and clean them all out first. Are u in a network? Any external devices connected while starting up?

Quote:
Originally Posted by dziorki View Post
And almost always with laptop battery don't want start..
bad battery?

cheers ...
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post #15 of 22
5/4/08 at 11:30am
Thread Starter 
Quote:
Originally Posted by qhn View Post
Any external devices connected while starting up?
no...

Quote:
Originally Posted by qhn View Post
bad battery?
cheers ...
battery is in good condition. I works on this battery about 2h.
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post #16 of 22
5/4/08 at 12:35pm
review startup processes? virus scanner ? power scheme settings?

cheers ...
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post #17 of 22
5/4/08 at 12:43pm
Thread Starter 
Quote:
Originally Posted by qhn View Post
review startup processes? virus scanner ? power scheme settings?

cheers ...
Screen is blank and after 25sek i have resets like with old mobo, next after 2-3 once starting normally.
When computer is warm starting without problem.
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post #18 of 22
5/4/08 at 12:58pm
ahhhh ... now we may get somewhere. it happens on many Sony models as well. Take a closer look at the area of the memory slots. On sony the slots someitmes need resoldering

cheers ...
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post #19 of 22
5/4/08 at 1:19pm
Thread Starter 
So u thinking that is this by memory slot? So maybe my old mobo has the same problem?
I notice also that when I connect my battery when I'm using computer - my notebook is frozen and on screen I see color sings...
After this, my computer starting with battery without any problem because he is warm (i think so).

Cheers!!
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post #20 of 22
5/4/08 at 1:48pm
it is worth a shot in the (right) direction, i think. take pics and letus jnow how this next step turns out

cheers ...
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