Ipad 1st gen Not turning on

I think you already tried the basic troubleshooting steps to resurrect that device.

See also this support guide:--> If your iPad won't charge - Apple Support

If the issue still persists, contact Apple Support directly using thie link:--> Get Support

Regards

Giulio

iPad 1st gen is from April 2010 and is over 10-years old, now.

It probably was running an 8-year old outdated version of iOS, iOS 5.1.1.

Also, since 2015/2016, there are no more compatible apps for this iPad models.

Apps are gone.

That iPad model was really an “early adpoter” model that was really underpowered and only supported by Apple for one year and WAS supported by app developers up until the switch to 64-bit devices/code/software in 2016.

And even if you could get this iPad working, I would NOT trust a 8-year old iOS Safari Web browser to be safe and secure on the Internet.

Forget this iPad, now, and simply recycle it responsibly.

So, this is REALLY NOW the time to seriously consider a new or discounted, refurbished iPad from Apple or other Apple authorised resellers.

A lot has happened with iPad and iOS in 8-10 years and in the past 2 to 3-1/2 years since iOS 9 and 10 and in 8 years since iOS 5.1.1.

As an example and compared to that over 10-years old iPad 1st generation model,

The cheapest, baseline 2019, 10.2 inch screen, 32 GBs internal storage ( 21-22 GBs of actual usable storage space ), 7th gen Apple iPads have a 1/2 inch larger retina screen, it is overall lighter, in weight, newer, more powerful and approx. 2-1/2 to 3 times faster 2.3 Ghz, A10 Fusion processor ( CPU ), AT LEAST 10 times the internal RAM, with the 2019, 7th gen iPad having 3 GBs of internal RAM, iPadOS 13 support, with much better and improved multitasking features and much fuller support for externally connected data drives, Apple Pencil and Apple Smart keyboard cover support and have better audio speakers and the addition of better/improved built-in cameras for FaceTime, Skype or Zoom video conferencing use!

In addition, if you search online and look at various, reputable online Apple device resellers, you can usually find this 2019, 7th gen iPad at various discounts, depending on storage size and whether it is a WiFi ONLY model or a WiFi/cellular data model.

This is the harsh reality for these 8, 9 and 10-year old, OR OLDER, iOS devices, now!

Time for a new, refurbished or much “newer” ( read used ) iPad.

If you must purchase older, used iPad models, DO NOT look at anything older than a 2014 iPad Air 2 or 2015 iPad Mini 4.

Both of these models are the oldest iPad models that the up and coming iPadOS 14 will support, in the Fall of 2020.

If you must purchased used devices from unknown, untrusted sources, you must ask A WHOLE LOT more questions of the iOS device seller, ask for more photo/images, ask if the iPad has user/iCloud activation lock and ask for photos/images/short video proof, ANY POSITIVE, VISUAL PROOF, that such an iPad has been reset to factory settings and shown proof of the iOS device's start up screen showing the animated, moving, multi-language “Hello” Welcome to iPad screen.

If the iOS device seller is unwilling to do all of this to show you that the iPad, in question, is ready to use with no barriers to new user activation and use, pass on the iOS device and look at other iOS device sellers, elsewhere, who will be more accommodating to answering questions and providing visual image or video proof of a proper factory reset iPad.

Sorry & Best of Luck to You!

It wouldn't be worth $5 in resale to be honest. It won't run ANY modern apps. No one wants a 10 year old device, which isn't compatible with just about anything current. No Netflix. No Youtube. No Facebook. Safari browsing won't be safe. It's truly worth nothing at this point.

MichelPM's advice to recycle it responsibly is your best option at this point.