Precision 7760 Multiple issues

I am experiencing multiple issues with my Dell Precision which I have had for less than one month and wanted to reach out to see if anyone else was experiencing any similar issues or knew the solutions.
Specs for the Precision 7760 in question:
Xeon 8 core processor
128 GB ECC Ram
Nvidia A5000
The display was one of the two 4k 120Hz displays. I believe it was the WWAN/WLAN Capable model though, but I could verify if needed.
6 cell 95Whr long life cycle battery

My first question is, what type of battery life would be expected running low-impact programs such as Microsoft word or just surfing the internet? I knew that running intensive modeling software would likely require being tethered to a power supply, but I felt that the 2 hours I get is somewhat low whenever just typing a paper or performing research.

Secondly, I am noticing that the speakers will make a crackling or popping noise every once in a while whenever watching a video. I know it is not an issue with the videos themselves because I can go over the same spot where the sound was without hearing it the second time.

The last, and most critical issue is that upon startup, I can see the dell logo, but whenever it gets to the sign-in screen, about half the time I see nothing. The display is backlit with black. After 30 seconds or so the black light will go off until you drag the cursor or hit a key. This issue has gotten worse and can now happen after completing the sign-in, and once occurred in the middle of watching a college lecture. All of the drivers were up to date as of yesterday (1/19/2022) as well as the Bios.

Any information or solutions are greatly appreciated.