[Cicero]

Now it’s telling me that RAM is critically low

You might try going into defrag to check if that is true. You probably don't want to actually defrag it until the problem is resolved, but check if the hard drive is almost full. If so, then maybe you need to remove some of the videos or other large files, because it won't work properly if the hard drive is nearly full. Save the hard files to a read/write CD if you can, or another memory device, and then delete them from the hard drive to make more room. You want to avoid running the computer with the hard drive nearly full.

[SeeSac]

"Now it’s telling me that RAM is critically low"

You might try going into defrag to check if that is true.

Degrag has nothing to do with RAM.