How do I fix this Windows boot error?

My sister just handed me her old Dell Inspiron 1501, and lately, every single time I try to boot it up, I get stuck looking at this screen shown below, where I have to mash any random key just to get Windows 7 to actually load. Does anyone out there know how I can skip this totally unnecessary extra step?

press any key to continue
press f2 times to enter setup
press f12 and any key to enter boot menu

Hit F2 to pull up those boot options and see what you're actually working with... also make sure the right drive is set to boot after you plug in the USB/DVD.

It’ll probably look something like this



What did the screen say right before that message popped up? Was it maybe a CMOS checksum error—you know, the one that says "defaults loaded" or something similar?

Oh man, look at what I just stumbled upon:
WARNING: the battery cannot be identified; this system will be unable to charge this battery
press any key to continue
press f2 times to enter setup
press f12 and any key to enter boot menu

It sounds like you'll need to swap out the CMOS battery on the motherboard.
If I recall correctly, it should be a CR2032 model.

The cover is located here:



And the battery itself:

Yeah, unfortunately, it looks like you might be dealing with something a bit more significant—and potentially pricier—than we initially thought.

Once you manage to boot up into Windows, the first thing I’d suggest is verifying whether the battery is actually refusing to charge at all. You can find the battery status icon tucked away in the bottom right corner of your screen.
If it isn't charging, there are really only three main culprits to consider:

1. Your power adapter might have kicked the bucket. You can test this using a multimeter like this
2. The battery itself could be dead. Dell actually provides this kind of diagnostic option, so it's worth giving that a shot. It's pretty straightforward, though—if the diagnostics say the battery is shot, you're looking at buying a replacement.
3. There could be an issue within the BIOS, which usually requires a BIOS update done this way. Now, there's a bit of a "Catch-22" scenario here that can be quite frustrating: Dell typically requires the battery to be charged to at least 10% (or maybe even higher, I can't recall the exact spec offhand) before they'll even allow a BIOS update to trigger. But, if the battery won't charge, it's incredibly easy for it to drain completely. So, you might be stuck in a loop where the problem isn't actually the battery, but the BIOS—yet you can't fix the BIOS without a partially charged battery. I'm honestly not sure what else to suggest there, other than perhaps buying a new battery just to facilitate the update, which feels silly since you might not even need a new battery in the first place!

On top of all that, there's also the possibility that your CMOS battery has drained, much like what was mentioned in the post above.

Best of luck!

My laptop seems to be stuck in this weird loop where it’s constantly plugged into the wall, and even though it keeps insisting the battery is sitting at a perfectly full 100%, I haven't actually had the chance to unplug it from the power source and see if it can actually run on its own juice yet.

Remove the battery and simply plug it directly into the charger.