How to check if Xbox 360 S is working properly?

Hi there Thrasher585,

Thanks for reaching out here in Xbox Forums. I understand there is a question in regards to the Xbox 360 console care. I recommend to check out the following article for more information:

Care for your console and game discs.

I would like to remind you about the Xbox Forum Guidelines.

• 22) Please do not discuss or post links to any topic that could violate the 'Terms Of Use'. Including any threads or posts regarding modifying the way your Xbox operates such 'modding' and/or 'chipping' your Xbox or otherwise altering
  the way it is intended to operate. This includes ANY discussion of self-repair. Please only suggest official support procedures as noted on official support pages on Xbox.com.

Hope this helps.

Another question:

My Xbox 360 S was a bit dusty. I dusted the outside, but I'm not sure how it is inside.

I don't want to take it apart as this seems complicated, and services in town that clean Xboxes are way too expensive ($100+).

Should it be okay, or are there signs if it is too dusty? It isn't powering off from overheating.

Hello thrasher585,

Thank you for keeping us updated. The console usually attempts to turn itself off if it is beginning to overheat. This is to prevent any damage to the internal hardware. There are some instances in which the console will provide red lights. This could
also indicate that the console is overheating. As XBF Crystal P suggested, utilize

the article that she provided to find out how to care for your device. We hope this information helps!

While connecting well to the internet via Wi-Fi or cable, your disk reader is reading the games well, it doesn't lock or it takes a long time to load games either from hard disk or disk storage, I feel that its in perfect condition

Everything seems to run fine. The framerate in some games seems a bit lower than I remember, but maybe it's just me.