ASUS UX390UA not starting
Hi all,
I have come across and issue I don’t seem to be able to figure out.
My laptop refuses to start, when the power button is pressed absolutely nothing happens. The issue appeared after I closed the lid to put it to sleep, when I tried to wake it.
The laptop has had it motherboard change under warranty twice but the the issue was caused by i the laptop would at least had LED flashing, which is not the case at the moment.
So far, I have tried:
-Battery disconnect and reconnect;
-Battery disconnected, power supply plugged in;
-Battery disconnected and power switch held for 30s+, then power supply plugged;
-New power supply.
None of the above has worked so far.
If anyone has an idea that could save this laptop, I am all ears.
Update (05/14/2020)
Hi ,
Thanks for the answers.
@aactech: that has been done with no success. No light at all and the fan doesn’t kick in.
@jayeff: -I have tried holding the power button with power connected for 10s+ a few time already and that doesn’t solve it.
-The battery was charged, not sure if it was charging though. As you mentionned the USB-C seems to be the weak point as on every laptop relying just on this. Unfortunately I don’t have a multimeter available at the moment, but I managed to find a spare battery that I should get this week end which will hopefully narrow the issue to a few possiblity, ie old battery dead and/or no charge going through the USB-C?
Update (05/16/2020)
So a quick update, I got a second battery and a voltmetre.
Both battery are at 7.6V for a 7.7B battery, so that’s pretty good.
I have checked continuity from the usb-c to the battery plug on the motherboard: there is continuity on the ground but nothing on the voltage ones.
When the power supply is pluged on the motherboard, there is 0.83V at the battery plug terminals
crwdns2934109:0crwdne2934109:0
crwdns2944067:07crwdne2944067:0
Hey!
im having the exact same isssue. I’ve also been trying what you did with no success. Did you solve it?
tjanks
crwdns2934271:0crwdnd2934271:0 Popinfresh crwdne2934271:0
Does anyone know if there is a CMOS battery? i cant seem to find one, but i would like to remove it.
crwdns2934271:0crwdnd2934271:0 Popinfresh crwdne2934271:0
Hi Popinfresh,
No I haven’t solved it, I don’t think the laptop was worth the effort. I had the motherboard failing 2 times under warranty and it feels like it was a similar issue again, so I just got another laptop. It might come back to it one day though.
For the CMOs battery I don’t think there is one on this laptop
crwdns2934271:0crwdnd2934271:0 Baptiste Wust crwdne2934271:0
thanks
i took the whole thing apart, it didnt make a difference. no CMOs battery either. my best guess is that the usb-c port has failed / damaged. i cant get the multi-meter to show a voltage. i guess i'll keep it for parts?
thanks for your help
crwdns2934271:0crwdnd2934271:0 Popinfresh crwdne2934271:0
I have the same issue. my solution was to press + hold the power for more than 40 seconds until the charging led indicator at the side disappear. I unplug the cable and turned the cable the other way around (maybe the charging wasn't right) and plug back in. I pressed + held the power again, then caps lock LIGHT turned on and wa-lah! it turned on. I hope this might help
crwdns2934271:0crwdnd2934271:0 myk crwdne2934271:0
crwdns2934275:02crwdne2934275:0