This is probably a motherboard level failure. There is no power on
switch, so to speak, only a momentary contact button that trips a flip
flop somewhere, and that is working since you get a momentary blue light
indicating that the start up sequence was initiated. You can try
reseating the memory chips, or just install one at a time to eliminate
that possibility.
I have reflowed quite a few motherboards in this series of Compaq units
for a fix, so that is my guess as to what is wrong.
Ardell Faul
Computer Monitor Service Inc.
Ardell's Laptop and PC Repair
10816 E. Mission Ave.,
Spokane Valley, Wa. 99206
ardell@icehouse.net
509-891-5188
On 6/25/2011 6:09 PM, William Heaney wrote:
>
> Greetings All,
>
> I am attempting to troubleshoot a friends
> Compaq F700 Series Laptop, his original complaint was the system would not
> start. My first thought was that the "brick" in the power cord had failed
> but after applies a voltmeter to that it appears to be in working order.
> Whether plugged in or on battery only the power light briefly ( about
> 1 sec
> ) glow blue and nothing further occurs, no spin up of disk nor any error
> beeps or anything on the display. My guess is a failure of the power on
> switch itself and/or the board to which it is attached. As Always
> thanks for
> any guidance or thoughts you may have.
>
> [Non-text portions of this message have been removed]
>
>
[Non-text portions of this message have been removed]
http://tech.groups.yahoo.com/group/simplycomputers2
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