cause sceptre is a horrible company? I bought a sceptre monitor from costco and it was hands down the worse monitor I have ever seen, EVER.
It was a 22 inch widescreen with a native resolution of 1680x1050 but with a downscaler allowing it to take up to 1920x1080... however it only worked right on the VGA port (which the instruction said to use). On DVI it will default to the 1080p resoution both blurring due to scaling, requiring your video card to do more work, and distorting the aspect ratio... but setting it to 1680x1050 on DVI made it STILL distort the image into a wrong aspect ratio and show black bars on the sides... lower resolutions will show black bars on all sides even top and bottom... ridiculous really.
It was also making a high pitched noise, it had a "feature" for adjusting the brightness dynamically that wouldn't stay off and caused it to jump back and forth from bright to dim and so on and so on (making a clicking sound every time it did, about once every 20 seconds)... I remember I listed 6 reason to the costo rep as to why it was the worst monitor I have ever seen... Funny enough it was advertising as their "gaming monitor" model.
Anyways, Overscan is a common issue with crappy TVs... my parents made the huge misake of buying two different sony (sony HATES you, never buy sony!) grand wegas (different sizes and of slightly different model types) and both have the same problem no matter WHAT the input source is, it basically cuts off a few pixels on each side of the screen... It also APPEARS to "work fine" on HD TV broadcasting... but thats just because there is really nothing for it to cut off on the edges of that... they leave room for underscanning TVs when creating subtitles (i should know, I used to do that).
There is absolutely nothing you can do except buying a TV that doesn't suck next time.