Question Sony Vaio no POST with keyboard lights on?

[Benerang]

Hello, I have an ancient Sony Vaio laptop (PCG-7Y2L) that refuses to post. It doesn’t have a battery and nor do I intend to spend 115$ on eBay for a new battery. No, 115$ is not a typo. However, I’m afraid the lack of battery might be why it’s not posting. All that happens when I hit the power button is This: Upon pressing the power button, the laptop’s battery light will come on for as long as the power button is held, then the HDD light flashes for a quick second, and the DVD drive initializes, after that the caps lock, num lock, and scroll lock LEDs all light up and never turn back off, the CPU fan never spins up and there’s never an image on the screen. It’s like it’s just about to post, but then it just decides it doesn’t want to exist. Is this a bad CMOS? I know they’re rechargeable Nickelmetal hydride batteries, but idk if those going bad will affect its ability to post. I think the problem may be the main battery though, as I’ve heard Sony laptops are stupidly finicky about batteries, but what do you guys think? I’d like to get this absolute unit of a laptop working to have an old XP machine.

 

[SteveRX4]

Has your charger stopped working?
The cmos batteries only last about 5 years. have you ever replaced it?
Your bios should still work though.
How old is your laptop?

 

[Benerang]

Has your charger stopped working?
The cmos batteries only last about 5 years. have you ever replaced it?
Your bios should still work though.
How old is your laptop?

The charger is brand new, I just bought the laptop and charger from eBay a little while ago. No, I have never replaced the Cmos, and Im not sure where to source a 15mah recharge cmos battery. And the laptop was made in 2007. It’s got 3gb ddr2 and a 1.6ghz Centrino duo in it. In not sure why it’s refusing to post, it’s like it’s stopping itself from posting at the very end of the post.