5 Posts
0
7696
Dell Latitude E7470 won't turn on 3 blinking light
my pc won't turn on a week ago 3 alternative blinking light white and orange but after more than 20times it can be opend but it work again if i close the screen to make pc in hibernate but when i shutdown or restart it does the same again 3 blinking flashs and this is a video https://www.youtube.com/watch?v=g3rkPv-hqiY https://www.youtube.com/watch?v=Gc9yJlmz4xk
Louay Khaled
5 Posts
0
November 21st, 2018 13:00
hank you sir i solve it the problem i see was the BIOS i download the last one and rename it to BIOS_IMG.rcv and put it while power off then click on ESC + Ctrl then plug AC Cord and its work the updating firmware launching with red text Do not power down your systeme thank you :)
Louay Khaled
5 Posts
0
November 6th, 2018 12:00
the battery work and save charge so i will try the CMOS one
ejn63
10 Elder
10 Elder
•
22.8K Posts
0
November 6th, 2018 12:00
If the system is under warranty, call Dell. They'll replace the reserve battery under warranty. If not:
Replace the CMOS battery.
See "replacing the coin cell battery" in the manual
https://www.dell.com/support/manuals/us/en/19/latitude-e7470-ultrabook/late_e7470_om/working-on-your-computer?guid=guid-9ccd6d90-c1d1-427f-9e77-d4f83f3ad2b6&lang=en-us