I have a Toshiba Satellite A205-S4597 with Windows XP. Ho w do I restore to factory settings? I have tried holding the 0 key and pressing the power button 1 time. There is a long beep but still goes to login screen. I don't have restore disks. How can I restore to factory settings?
Computers from that era typically came with restore CDs. I don't believe restore partitions started to become common until Vista and Win 7. You'll have to find the CDs or contact Toshiba.
In particular, most of the Toshiba laptops from around that time used a weird Intel RAID configuration (even though they only had a single drive). The RAID drivers were slipstreamed into Toshiba's restore CDs. You will not be able to reinstall Windows using a regular XP install CD. (Well, you can install it, but it won't boot.) I struggled with this for several days with my Toshiba laptop from back around that time, before finally giving up and digging through a dozen boxes to find the original install CDs. In theory it should be possible if you get the correct RAID driver and install them as an option before beginning the XP install. But I never managed to find these drivers on Toshiba's website.
You *might* be able to install Vista or Win 7 on it. I was able to upgrade that old Toshiba laptop from XP to Vista, then Win 7 despite the RAID weirdness. I was just never able to get a clean install off a retail XP CD to boot.
Edit: The Toshiba Disk Creator for Win XP/7 looks promising (no description given).
For Pete' sake, RFTM (read that fine manual). It has steps how to create recovery CDs. If no one effed with that laptop, you should still be able to do that (providing that the CD recorder still works).
Forget about putting Windows 10 there. It simply does not have the power (CPU, RAM, HDD) to run it. And even if you put WIn10 there, Windows license alone will cost you $80. I would not buy barely running laptop for $100 if I can buy shiny new one for similar price.
If you can't reinstall clean XP image on it -- use the opportunity to learn Linux.