Got one of these machines in the shop, wouldnt power up.
Could hear something when I plugged in the power, lo and behold found this thread. replaced the battery, have a happy customer! THANKS!

Replacing the battery solved my no-power-up problem, too. By the way, it's possible to pull the RAM without pulling the hard drive if you're reasonably dextrous.
Thanks

I went to the link to purchase a battery but have no idea which one it is. Can someone please tell me which battery on that site I purchase? THANKS~~

To All with Dead Astros:
I recently purchased an Astro from a junk store ($5) (They thought it was just a monitor! LOL), and it also seemed dead. So I tore into it (alot easier to take apart than I expected). I changed the CMOS battery. The hardest part was finding it, it is hidden under the ram stick! The battery is just a simple 3-volt button-cell battery. (Get them at Wal-Mart). I put it back together and it fired right up! The weird part was that the computer was actually my first cousin's!

~~~I changed the battery also. It ws a lot easier than I expected even when I took apart the top side when not needing too. When you take apart the Astro, the battery is in the bottom portion. I am not computer savvy and went and started taking apart the top. The battery is number cr2302. THANK YOU to everyone who has posted and helped with this information. I really was going to get rid of it since I thought it was just done after 7 years. Nice computer for the kids. Have a good one!!~~~

Thanks to everyone on this forum for the advice about replacing the CMOS battery.

After a recent power surge from a lightning strike, our Astro would power up, but with no video. Even though most of the posts here recommended replacing the CMOS battery in order to repair a "no power" issue, I figured it was worth it to try replacing the battery for our "no video" problem. What did we have to lose? Following the directions posted here, my two teenage sons took the computer apart and we located the battery. Getting the new one back in proved to be the hardest part of the whole process.

They put the Astro back together, and it powered right up WITH VIDEO! Thanks so much for this forum. Like other posters, this computer was the primary computer my kids use for games, so we hated to have to get rid of it. We really appreciate the advice.