The charger is fine, most of the time with the description you just made is due to the battery itself not being able to charge fast enough. Your battery may be so damaged it caused it to be near it's eol.

Firstly, check if your windows detects a part without a driver by going into device manager. because the gpu takes up a pci lane, it should recognize something there. The drivers are provided by Nvidia and not by MSI. It's just a generic geforce driver that can be found here https://www.geforce.com/drivers. if this doesn't work, comment below and we can figure something else out. GPUs are generally soldered onto the mobo so it may just be a driver issue.

Hi Tommy, Maybe you typed in the wrong Canon model and instead you meant the Canon 30D. Have you tried cleaning your CF card? Most likely just a dirty contact occurring between the card and your device but also note that the port may just been worn out after all these years. Do not use a compressed air can and instead use proper cleaning solutions made for memory cards and memory card readers itself. Regards, Alvin

Hi Kirsten, Let's perform a diagnostic test that Apple provides. Performing such test will result in error codes specific parts not working. However also note that the test is not perfect, for example if the SATA connection is damaged, the hard drive will not be detected and the error code will spit out problems on the drive itself but the problem lies with the connection port. So just understand it's not a one and done test. Before you go out and replace the possible damaged parts, try to perform an internet recovery, instead of the built in recovery. If that does not work and/or performing a diagnostic test. Then very likely the logic board has an issue. Your intermittent freezing proves it's not a battery issue and could be isolated to either a logic board problem or a hard drive failure. Replacing a hard drive isn't an expensive part but a new logic board may be since I see it goes for ~$300 here on ifixit. Feel free to reply to this post if you have questions. Regards, Alvin