Acer EXTENSA 4420-5910 Laptop
2008? +Vista home loaded. new.
you meant that?
dead PC, no full evidence told. is screen dead,fans dead an all LED dead, or beep codes or LED blink codes or text errors to the screen and all that is dead, that is a 100% dead PC or just dead screen
just bought it dead as most this old are dead, from $1 garage sale>?
this screen has CCFL back lamp;s and 99% are dead now world wide, at 20,000 hours on them or 5 years 10hr/per day. dead.
if seem to be on and LCD is dead use flashlight dark room
pointed LCD, if see data now that tells you CCFL tubes are dead
in 30seconds work, amazing no?
here are are the tests, for 12years lold
the CMOS battery in side is bad, dead, and can not be ignored.
remove old battery huge leave it out until PC runs again right.
run on correct AC power pack do not mix it with others wrong.
power on , hold this button for 10 seconds and release (intel reset)
does he power button LED work, LED power glows
fell or hear fan spin , yes too.
then do this
the flashlight test trick, do this if fan blows.
and or hammer he BIOS hot key F2 as you release power button
this puts up BIOS screen .
the laptop can be connected to a monitor if your CCFL dead
and run like that for ever. (zero portability)
power on and hit, Press Fn+F5, LCD/CRT/both display switching
seen on page 89 of your manual.
set it to both blind. if CCFL is dead, or to CRT
CRT means external VGA (legacy named ectreme )