How long does it take to do a factory reset on a hp desk top with windows 8

[Chainsworth]

I’m doing a factory reset on my hp desk top with windows 8 and was wind how long it can take 

[WAWood]

@Chainsworth 

It depends a lot on the PC model.  It can take 30 minutes or less; it can take two hours or more.

Somehow, the Factory Reset has taken on the value of an Urban Legend that is a Miracle Cure for any ailing PC. Not only does it rarely fix the PC, if there is an underlying hardware issue with the PC, it will make matters WORSE by leaving the PC in an unusable state.

Even if there is NOT an underlying hardware issue, the reset puts Windows back to where it was weeks or months ago -- and this will then automatically launch hours or days of Windows Udpates that will bring your PC to a grinding halt, driving the processor up to 100% and the disk utilization to 100% as well. Both of these do NOTHING to speed up the PC.

The HP Factory Reset function relies critically on the contents of the Recovery partition being intact. If those contents get corrupted, which can happen either due to hard drive failing or due to Win10 Upgrade from an older OS, the reset simply will not work -- and will TRASH the PC in the process.

So, you go from having a SLOW PC, to having NO PC. That's not an improvement.

IF you had a really SLOW PC, you have basically TRASHED it by forcing a factory reset, as that will, most likely, fail due to a failing drive -- which is the most common cause of a really SLOW PC.