I'm on an old laptop. Wouldn't I lose my lightning channels and the sats associated?
Discussion
In my case, umbrel had them backed up on the hard drive, so everything was recovered. The SD card is just the OS. Iβd wait for confirmation from someone from umbrel, though because your setup is different from mine. I used a raspberry pi, not a laptop
Thanks
Can you SSH into it?
To ssh in, I'd have to use another computer running Linux on the same network yea?
Yes
windows works too
virtual Machine?
Regular windows with Putty. What OS are you running on your desktop?
You can even do it from a phone if you have an SSH app. 
If you can then try these steps https://community.getumbrel.com/t/how-to-restore-your-node-wallet-updated/3602
Thatβs why Iβm wondering if #[3]β automatic channel backups are enabled for you and could let you do a full restore. https://nostr.build/av/nostr.build_dd3c755f465652c5fe720fea89186a6b9b66d5a6900b18c41713d20f4cfdbc51.mp4
Hmm interesting π€
If I could access it, that may work.