Question edited for a lot more clarity.
Question mover to a Roland Vinyl Cutter category..
Did you try a power reset or factory reset on the unit and a reboot of the computer?
https://www.google.com/search?q=roland+gs-24+factory+reset
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Question edited to fix spelling.
It is a Utility Knife, it has no software downloads. You posted to Computers and Internet? I'll move it to Cutting Tools.
https://www.google.com/search?q=stanley+10-778
With the cheapest multimeters costing as little as just a few dollars there is no reason not to have the ability to check things instead of guessing.
With most portable tools and appliances the first thing to check is the power cord because around 60% of the time an internal break is the cause of a tool not starting.
Power tools and appliances often have electronics to provide variable speed or soft start. Checking these is beyond the scope of the home repairer but a multimeter can check continuity to any electronic component and from it to the motor and the ensure there is continuity through the motor.
If everything else is ok the fault is probably with the electronics if there is any. If you are feeling really brave, the final test is to temporarily and safely bypass the suspected component and apply power.
you can use a portable bandsaw to cut rebar, I find it to be the best solution when I can't take the rebar somewhere to cut it. But be careful if the metal is heavy it could fall and dent/damage the floor if you're working indoors of cause injury should it land on you.
Use a third blade, preferable mounted to your utility handle, to part them. Handle only from the back side and give the utility knife a slight twist as soon as it is between the points of the new blades.
Manual bolt cutters usually have symmetrical V-edge cutting blades. With the sharpening angle in the range of 20-30 degrees. For comparison, the sharpening angle of the kitchen knife is less than 10 degrees. With such a pretty blunt edge is impossible to cut your finger. But this is the best option for cutting thick metal rods or cables. Like this:If it is interesting to read more information about bolt cutters, I recommend this review - https://toolslaboratory.com/best-bolt-cutter-buyers-guide-2019
This utility knife reassemblies similar to the original. The only difference is this model uses two screws and that plastic insert. You will align the two metal halves and bring them together. Use care that the blade does not fall out of its holder and the little black plastic piece stays in place, near the blade. This may take a few tries. after you bring the two halves together you will carefully separate the bottom end (farthest from blade). Separate it just enough to slide the plastic insert into position. Once the three pieces align you will know. With little effort the two metal halves will close together. Install the two set screws and test for proper function. I'm including a Youtube video that shows how to properly change the blade and what it will look like after it is reassembled.
https://www.youtube.com/watch?v=5napTSRSyeQ
With the sharpening angle in the range of 20-30 degrees. 
For comparison, the sharpening angle of the kitchen knife is less than 10 degrees. With such a pretty blunt edge is impossible to cut your finger. But this is the best option for cutting thick metal rods or cables. Like this:
If it is interesting to read more information about bolt cutters, I recommend this review - https://toolslaboratory.com/best-bolt-cutter-buyers-guide-2019
