Windows 10: A few questions about resetting the BIOS settings.
That white 2 pin header is where the battery would be connected. There is a picture on the page in the link NavyLCD posted that shows the wires from the battery going to it. It appears somebody already removed it? If it has already been removed, the BIOS has reset to defaults on its own. Keep in mind, on a laptop, some settings will not be reset by removing the CMOS battery. If you set a BIOS password for instance that will not be erased by removing the battery. It's stored in non volatile RAM. Everything else will be erased though, boot order, etc will go back to defaults.
Great catch! That explains the absence of a battery - it's supposed to be there but isn't.
So, I just have to buy a new battery?
I had to zoom in on one of the pictures in the link you posted to see it. Plus it was upside down compared to the picture the OP posted.
Yes and no? A missing CMOS battery won't prevent a PC from booting up, or cause the no display issue you posted. Not as far as I know. So you have other issues to sort out.
Sorry, i thought we may have gotten lucky. Hadn't seen a battery hidden before. If it doesn't have a battery then it must be using a capacitor to store a charge and then trickle that into bios. Shorting capacitors would be a real pain.
I assume you want to keep using this laptop so like someone else suggested it maybe quicker and easier to get a replacement keyboard with a working function key.
Now on some keyboards you dont have to press the fn to get f2. Likely you've already tried this as well.
BicycleRow have you tried booting it up with an external monitor connected? Also, is this maybe the result of a failed BIOS flash?
I know I'm reaching but ......
Where is this 2 pin connector you are shorting. Is it possible that this is where a battery would connect if one was present? . See this pic.
I provided picture just to see where the battery connects. Just trying.
These pictures are from a 5745G as per opening comments of author at this link http://www.insidemylaptop.com/disass...e-5745-laptop/
On a laptop, the BIOS could retain its settings if powered from the main battery, even if the CMOS battery was dead or removed. All would be fine until you unplugged the power pack and removed the main battery. The after a few minutes the settings would be lost. Date and time would be wrong and the BIOS would go back to all default settings. On a desktop PC, that doesn't have any other battery, all would be lost every time you shut down if the CMOS battery was dead or missing.
Caledon Ken said:
Yeah, I've tried. And no. My friend just switched from his onboard video to his video card in the BIOS settings and that caused it.
I Changed BIOS OS mode selection setting from CSM to "UEFI and Legacy." Now laptop boots to blank screen. No bios splash screen. I hear the optical drive being recognize and the fans turn on. Fans intermittently speed up and slow down.
Can anybody explain these settings in bios?
I dont really understand how these settings work.
Can anyone show me a detailed way to update my bios?
Have a Dell desktop, XPS 8900.
A pop up presumably from Dell says it wants to "update" my System BIOS.
Isn't the BIOS the complete "guts" of the OS ?
Whys should an update be necessary ?
Hey, folks. Just upgraded to 10. Not blown away so far, but it's a lot less stupid than 8. Glad they gave it away for free, seems like the fair thing to do considering they actually charged people money for 8.
Anyway, I'm here because my mouse...