You may have a bad ignition switch — not the part that you put the key into, but the electronic module behind the key switch. I had a Mercury Grand Marquis once, and sometimes the radio would go on and off and on and off and on and off… A coworker asked his brother, a Ford Mechanic, what it could be, and he told him the ignition switch. I bought a new one at Auto Zone for $15 and installed it, and the problem was solved. It was an easy install; and the old one had a smoky smell, as if it had been burning.
I have that same MP3 player. It is a good MP3 player. Do you have a Linux computer available? If not, then go to https://linuxmint.com/download.php and download one of the Linux distros (if you aren’t sure which, then download 32-bit Xfce). Now create a DVD from the file that you downloaded. Once you have done that, reboot the computer with the DVD in the drive, and boot to the DVD. Doing so will load a copy of Linux Live on your computer. (Nothing on your hard drive will be erased by doing this.) Once you have logged into Linux Live, try to copy some music to your MP3 player. The reason I suggest Linux is because sometimes Linux is better than Windows at reading and writing to a drive.
Are you sure you purchased the correct memory for your laptop? If so, maybe the memory you bought is defective. I bought some memory once from Ebay. It appeared to be the correct memory; but the computer wouldn’t boot all the way after I installed it. Turns out the memory was for an AMD machine, and my machine was Intel. After the seller told me that, I looked back at the product description, and sure enough, it said that it was for AMD machines!
Sounds like the tea did some serious damage to the laptop - probably the motherboard is damaged. But there are lots of electronic circuits in the computer besides those on the motherboard — the keyboard, the hard drive, the memory, etc. Any one of those could be the culprit here. The easiest thing to do would be to try to find replacement memory real cheap on Ebay, and then swap out the memory. If the memory was the culprit, that should fix it. If you have a spare hard drive laying around, swap out the hard drive; that may fix it. If you know what you are doing, you might try to replace the keyboard with one from Ebay. Beyond that, you will be better off simply looking for a good used replacement for your laptop.
Go here: http://h10032.www1.hp.com/ctg/Manual/c05... Look on the top of page 15 - it tells you the kind of solid state drive you can use in your computer. Check the two PCIe NVMe drives. I’m pretty sure that this is what you want. But when I looked up the part number (L01520-001) on one of them, I couldn’t find the part. Looking up parts on the HP website is hopeless. If you can find one of the two drives that are listed there, you will be able to see if it is the type of drive you are looking for.
Did you know that you can buy this exact same printer at Walmart.com for $49.99 refurbished? https://www.walmart.com/ip/HP-Officejet-4630-e-All-in-One-Printer-Certified-Refurbished/945174726 It might be worth looking at that rather than at trying to change the glass.
Your printer may think it is out of ink. Try the following: https://itstillworks.com/reset-brother-ink-cartridges-4740636.html Also, do a cleaning cycle or two, both black and color. Do a deep cleaning if the regular cleaning doesn’t work.
The ignition switch may not be very expensive. There are probably two parts to the ignition switch - the part that you put the key in, and the electronic part behind the key switch. The electronic part is the part you may need to replace. I bought this part once at Auto Zone for around $15. Replacing the electronic part of the ignition switch fixed an electrical problem my car had. I would start with that part. If your starter tests good, then the problem isn’t with your starter, it is with the part in the car that tells the starter to run. It occurs to me that you might be able to run a mechanic’s switch to your starter, then turn your key on and push the button on the mechanic’s switch when you want to start your car. (That’s also known as “hotwiring” your car.)