wow its telling you what is wrong. nice no?
the HP manual covers this, as does all HPs ,ever seen that?
there is no lack of answers nor lack of tests, not EVER.
any A+ Certified tech can help you,, it's super easy. that.
DC5100-MT is the real name with dash
and MT means mini, not SFF. ok got it.
ill first do age then spec, to see what this is.
its old for sure with Compaq logo, (relic in my book)
did you replace that old BIOS CMOS coin cell yet/.?
they dont last this long, clear?
desk top PC,
what is this thing>?
Holding cmos button.
there is no such button, only power and RESET on the outside of DT cases.
did you play inside. that it? do tell what you did in DETAILS.
when you power on, do all fans run, this is FIRST do they>?
I say PSU is dead, now. if fans dead.
a tech uses a voltmeter to check all PSU bus wires for proper voltages. 5v 12vdc from 5 to 10 wires. there.
curious, why ask here and not HP.com where you get faster and 10x better answers. ???
Compaq and HP changed BIOS many times, and the beeps are all different. since screen is dead i cant ask you to read what BIOS is there on said screen,its too late now. but i found your old 2005 book, seen below....
fans dead, why not report that first.??
you turn it on and the fans must stay on, for 1second
after 1 second if the PSU sees (or mobo) sees errors in power bus
it shuts its self off. all DT do that ,desktops.
then make sure the fans are not packed in LENT
the CPU shuts down in seconds if fan dies. or heat sink falls off it.
ever see this?
This safety feature prevents say blowing up a $300 processor, not yours its old $5. p4 https://h30434.www3.hp.com/t5/Desktops-Archive-Read-Only/beeps-5-times/td-p/294004/highlight/true/page/3
it is a relic, a Pentium 4, ID retire it.
came with XP or Redhat Linux new. or w2000
oh my gosh, (OMG) it had a minitower version with same p/n
Ok 5100mT is minitower.
so the PSU is standard? on that I thing
show me a photo of it?
at HP forum. (in in you book seen below)
the magic trick is powering on with no memory,
powering off, push power button with power cable removed
wait 5min, put back memory sticks.
THE MT version came with windows 1000 up to VISTA
birth date early 2005, says HP.com
ohh, and to type dc5100-mt with no dash HP goes lost. wow.
the beep pages on the below is here, at HP.still after 10 years.\http://h10032.www1.hp.com/ctg/Manual/c00441828
page 2-21,. tells you what 5 beeps mean, amazing in the book.no?
RTM first the ask.?
does PC fail it all cables removed, not Power cable.?>
by fail mean fails to turn on run and fans blow?
and not beep.? if yes plug in VGA, see anything there
if PSU stays UP?
The PSU must stay on, does it, as must fans
this is step one, and not stated clearly.