Hard to say what occurred. No problems after reboot you should be ok....

It's not the "light source", it's a bad part on the circuit board.. (or possibly the display itself or the connections) The part may be cheap, but knowing which one to replace may cost you ...

Maura, This is my office now and since I do have the lap top I can move it over to the right when I need more desk space or push it back under the shelf and reach out to type. I have even had two laptops on the desk at once repairing one while getting repair directions on the other. The printer is on the left under the fabric and lace cover I just push back when I am using it and my office supplies are in the drawer under the printer. The desk is really small and I took the top off of an old wood kitchen table and set it on top of the small desk to give me more desk top area but not a larger foot print on the floor. This way I was able to tuck in the little one drawer thing with the printer. The other little side table is an old old hospital bedside meal tray.I use it for many things. I know this is all a bit crowded but this room is multi functional. It is my office, sewing room ,craft storage space, mosaic workroom and my exercise room. The room is 10 foot by 10 foot. Chris Here is a link that might be useful:

There are 4K computer monitors, but many "run of the mill" PC monitors can run higher than 1080p, for example, my 23" monitor has a max resolution of 2560 x 1440 compared to 1920 x 1080 "full HD". That's 1.77 times the pixels. Not quite 4K 3840 x 2160 but noticeably more detail if your PC's graphics card can handle it. Resolution isn't the only thing either. You have to look at screen refresh rates as a powerful PC can run games at 90+ frames per second. Most reasonably priced 4K TV's have a native refresh rate of 60Hz. (regardless if they claim 120 or 240, that's just a marketing gimmick) That being said, you really need to be a game geek to really care. As a casual gamer, I've played games on mediocre systems at 30FPS 1080p and it looked good and played good to me personally. Cheap TV's will also have cheap LCD panels with uneven LED backlighting - creating a halo around the whole screen. The cheap panels will also blur more on fast action. I guess what it boils down to is what you want to pay for either. But a good TV will look great and can do more if it is web enabled. For a college kid where space is at a premium a TV may be the way to go.