nothing happens, I will take that as no text shows on the screen
at boot (power button on ) time as it did for
is not the full model number making accurate answers x10 harder. for any helper, who knows HP gear.
forget that huge battery, no laptop needs it to run on AC power.
most batteries this old are bad. same with the RCT/CMOS coin cell in side. page 55 shows how to replace IT.
The big battery is ALWAYS fix last DEAL. ok?
the blacks screens are 1st always, to diagnose them first.
ill pretend you said CQ61-100
(not 200,300. and so on)
looks like it was made in 2009 .
for 8 long years , you pushed power and saw
"Press the ESC key for Startup Menu
but today, you see 'NOTHING
" (nothing is nothing)
does the fan inside
blow air and heard ? if not the AC pack is bad.
(wall AC >>>>Pack>>>>19vdc-to-PC)
so that is the black screen of deathh(sic) I call it.
so if the power pack is still good, we do the flash light test.
ever heard of CCFL back lamps, they ended in 2010
(see why my wanting real model numbers matter?)
if it has ccfl lamps they all fail about NOW.
the flash light test.
the black screens of ***** list is here. and tests.
it has many causes. the ABOVE OR top CAUSES. ONLY
THE GOAL IS BIOS SCREENS. "esc" key BIOS is first
the cause of those are . here, 14 steps
remove power pack, and AC pack
push power button, for 10 to 30 seconds this is the HP
magic RESET, (its harmless)
AC PACK back in place. and to wall power hot.(means live power)
NEXT , if the fan works.!
if the fan does not work (say so please) and we can work that FIRST.!!! (in truth fan is first, it must blow )
ever clean out 9 years of lint inside? service it?
most CCFL were in fact inside Old C61 PCs.
see this? (this os folks changing them over and over)
They ended these junky CCFL in 2010, phase out.
a key year to not buy PCs older that that Laptops.