You're welcome.

How about your data, do you have that backed up to External media as I suggested prior to pursuing more aggressive repairs?
It would help to know the Make/Model of your computer. If you cannot burn bootable CD/DVD discs or make USB sticks, you have a bigger problem than just permissions.

Is this a desktop PC or a laptop? If it's a laptop, have you ever dropped it since you owned it? Or perhaps loaned it some who might have dropped it but didn't tell you?
It's certainly possible that both those problems are related as due to drop damage in a laptop, but if your computer is a desktop PC then of course that's not applicable. Those 2 devices share common real-estate in that their connections physically terminate on your Motherboard which could be faulty; but that's unusual on a computer that's a most 5 years old (Win8x). It's more likely that your DVD writer device has been bad for years and you didn't know it if you haven't watched any DVD movies or played any audio discs such as music discs. On the USB stick issue, can your copy files to from
ANY usb sticks that you have? We are not talking about bootable USB sticks; just a stick that is blank or that has data on it already. If that works, it's more likely you are simply doing something wrong. It took me 2 years to figure out how to make my first windows bootable USB stick; and I've been doing computers for many years.
EDIT: IMPORTANT NOTE: There is a bug with the Windows 8.1 and Windows 10 ISO installation files and MCT tool (Media Creation Tool) on the Microsoft website if you get to the part about downloading a new copy of Win8.1 to reinstall on your computer; and that is if the USB sticks you are using are SanDisk Cruzer brand, they will not work! You must use a different brand USB stick. Brands we have tested are PNY, VERBATIM, and EMTEC.
What you need to do is get to the bottom of that apparent hardware problem with your DVD writer and USB sticks, otherwise that computer is just going to be a doorstop pretty soon as it appears to now have multiple hardware failures. The best way to do this is to follow the link I gave you to my troubleshooting article back in
POST #2 above:
Windows 10 - Unclickable Task Bar.
Once you test your hardware, you'll be able to move to the software repairs section of the post, which I'll post for you here to read separately, as several people I've given this link to recently didn't see that there was more to this Post than the 1st page. Here's that software repair link:
Sound Problems.
What this does for you in a summary perspective is that if you have a failed hard drive or a failed RAM memory stick, and you do a software repair such as a windows
"in-place upgrade", windows reset, or windows reinstallation, and your original problem is solved, but the DVD writer and USB problems are not solved, that would point to a failure of the DVD writer itself and possibly the Motherboard.

If you replace the faulty DVD writer, but the USB problem remains; that would be additional evidence that your Motherboard is faulty.

If you replace the faulty DVD writer and can read/write to discs and even make a bootable disc with the new unit, but the USB ports do not read/write to or from usb sticks; that would still point to a Motherboard failure with the root hub controller portion of the Chipset.

Motherboard replacements on laptops are more expensive than their desktop PC counterparts, and can run from $175-$1500 US. If you get to this point, you may wind up considering replacement of your entire computer if the Motherboard repair cost more than a new computer ($200-$400).
For your purposes, if you fix the DVD writer issue (you could also buy a USB external DVD writer for about $25), you'd at least be able to burn bootable diagnostic discs to test your computer and apply Windows8 reinstallation media or factory recovery discs.
Another possibility is that if are not the original owner of this computer and bought it second-hand, refurbished, or it was a gift to you, the DVD writer or USB ports may have never worked. Have you ever used either of these since you owned this computer? This would be helpful for us to know.
Sorry to be long-winded, but if neither of those devices (DVD writer or USB ports) are working, you'll have a very hard time troubleshooting and repairing that computer yourself,

and you should consider taking it to your local licensed Computer Pro at a repair shop or large chain store such as Best Buy Geek Squad and paying someone to look at your computer. Diagnosis fees run from about $40-$120 US. This isn't the repair cost, only the cost to determine what is wrong with your computer. At that point you should ask for a written estimate for the total cost of repairs on that computer including both parts and labor. If it turns out to be a software solution, they will add the cost of rebuilding your PC, reinstalling windows and testing your hardware. This repair could run from $60-$140 US or so. Of course if they discover faulty components such as a Hard Drive, 1 or more RAM memory sticks, the DVD writer, and even the Motherboard, it could go into the several hundreds of dollars.

If it turns out you do have a laptop and the DVD and USB devices never worked from the day you got it, it's quite likely it was dropped and damaged partially and given to you to use or sold to you "as-ïs" especially if you bought it online or at an auction. The repair costs on a dropped laptop today almost always are greater than the replacement cost of a brand new laptop.
Hope this proves useful information for you.
Let us know how it goes, and post back if you have further questions. We are here 24x7x365.
<<<BBJ>>> 