Question My laptop won't start ?

[bbdm]

Hi!

My ASUS N56VV Laptop that I purchased 10-12 years ago wasn't used for a few years, and before that it was used rarely - about once a year. Then I decided to turn it on, and I have the same problem:

1st pessing Power button: CD-ROM test Starts & stops (like normal startup), keyboard lighting ON then OFF (like normal startup), Power light is ON, Charging light is ON, monitor is OFF
about 10 of 2nd pessings Power button: Power light ON & in a two seconds OFF, everything else is OFF (Then the 1st pressing is repeated)

It's obvious that accu battery & CMOS battery is completely dead & I changed CMOS (CR2032) battery (I didn't wait few minutes). After replacing CR2032 nothing changed.

What I tried:

• Holding Power button for a minute (with unplugged power cord & battery), then try to start (with accu battery & PSU, only with PSU) did not yield any results,
• Tried to hold Ctrl+Home (with & w/o pushing Power Button) - no changes,
• Testing RAM (I have only 1 4Gb module): I released it, clean it with rubber & brush, then tried to set it to each slot & turn laptop on - no changes
• Testing PSU with multimeter (besides the fact that accu battery is probably dead, I don't use it at all & I decided to take it away) - PSU is working. and still no changes: CD-ROM test Starts & stops (like normal startup), keyboard lighting ON then OFF (like normal startup), Power light is ON, Charging light is ON (w/o battery Charging light is OFF), monitor is OFF

What else can I try ?
Thank you.

 

[helpstar]

bios battery is inserted correctly?
is eventually a CD in the ROM Drive? remove it
replace main battery

 

[bbdm]

CR2032 inserted correctly
CD-ROM is empty
I don't need main battery at all, besides all laptops can work w/o it only on adapter.

 

[helpstar]

I don't need main battery at all besides all laptops can work w/o it only on adapter.

sadly not all, especially if the battery is faulty. Did you unplug it and try it with the ac adapter?
which ac adapter is it? is it the original one ?
if not, can it provide the wattage and voltage for you laptop?
19V and at least 90watt?

 

[bbdm]

Previously it worked without a battery, only on one adapter, like several other ASUS models that I worked with. I always use original adapters. N56V adapter is 19V 6.32A
Besides this, I also have ASUS EEE-PC, bought in 2000 - the accu battery died a long time ago, CMOS battery too (with each reboot the BIOS asks for settings), but it works perfectly on the original adapter

 

[helpstar]

try unplugging the battery
only one ram if two are installed
unplug hard drive and cd ROM
try powering up to get into BIOS

 

[bbdm]

battery is inplugged & there is only one 4Gb RAM module (i wrote before)
I'll try to unplug CD-ROM & HDD.

 

[bbdm]

I tried to power it up w/o CD-ROM & HDD, only with HDD, only with SSHD & only with SSD (naturally, between these operations, I held the power button for 1 minute with disconnected adapter) - still no changes: Power button light & power LED indicator are ON (like it was before), Keyboard lighting not blinking (like it wasn't before) & now to turn power off I have to hold power button for 10 sec (like it wasn't before).