sure tell more, tell what it does, fully.
a 12 year old PC from the year 2005., do you expect the coin cell to last 2 time normal, (carbon dating this PC tells me that)
CMOS coin CELL RTC batter
y (tiny) read page see image below.
HP dropped DV support a while back, but i have manuals below.
you said the power button is dead, but there is more to tell.
first remove the big battery in the bottom, take it out and leave it out, (they like go short and overload the power bus) its out now.
1: you push the button power, and the fan runs, does it? it must.
or it will overheat fast, is the fan packed in lint?
and what does the screen do. text wise.
good the DVD eject button works tell me there is power there.
if the screen is always dead say that. please. per F10 below.
here is a free manual.. free to download, no tricks. there.
I do not know how quick play works at all, sorry.
but for now Ill ignore that and focus on the PC part and your unstated windows vesion.
1: POWER ON , FAN RUNS
do the HP power on reset method yet>
all big batteries out, then AC pack removed. then hold power 10 to 30 seconds this is hard reset, (just for power, sleep, hibernate an and more) work now, good. not
3: the screen must glow , the BIOS key must all work now.
the magic key is F10, (the text to do that was on your screen for 12 long years, and if seen now still the screen is ok, and F10 works. if the screen is dead say so,
page 122 in your manual states
"Press f10 while the "Press <F10> to enter Setup"
message is displayed in the lower-left corner
of the screen"
it must, or the screen is dead or the RTC coin cell died.
service , rtc here.
rtc= real time clock (and BIOS memory.,NVRAM)
when dead the BIOS goes nuts and so does the RTC
i think this is the WiFi mini card, below. rtc under it.
i think any DV5000 series manual seen covers all this.
RTC and power reset and how to get to BIOS F10
bet bios working first then when that works
hit F11 key is the HP windows recovery key.
if your data is backed up, this puts the PC back to day1, new.
zero data personsal
if the F11 key fails say so, but will not if the HDD is still good
and not corrputed using microsoft install disks on this PC.