OK I got a replacement unit a few days ago.
So far, I'm pretty satisfied with my new laptop except that it gets pretty laggy, i.e. sometimes it takes up to 2 seconds for the text that I input to come out, or to switch Firefox tabs through clicking, or scrolling down a webpage after clicking a link, or just opening a blank new tab, etc. It takes a significantly longer time. What could be the problem here?
The AMD driver crash issue with Heroes of Newerth still exists, although it does recover for the 2 times I've encountered it.
The USB 3.0 transfer speeds is still bad, even after I reinstalled the driver (Renesas) from HP. At this moment of writing, I'm transferring 19.6GB of items (videos and documents) at a rate of 9.00MB/s to 9.86MB/s, which is absolutely horrible. I'm beginning to regret that I bought a USB 3.0 external hard drive.CULPRIT DETECTED! WDSmartWare was backing up whatever I was putting into my laptop, I guess that's why my transfer speed suffered. Now my transfer speeds are slightly better. It fluctuates a lot. I was expecting a consistent >50MB/s of transfer rates with USB 3.0. However, USB 3.0 transfer speed is still more than double than the transfer speed of USB 2.0 (for the same item). I guess that's something good.
For comparison purposes, my USB 2.0 external hard drive is clocking speeds of 20MB/s to 26MB/s from a USB 2.0 port. Seriously. What is going on here?

As a summary, my problems so far:
1. Laptop lagness.
2. AMD driver crash issue when hitting Windows key in Heroes of Newerth.
3.
Extremely slow Slow USB 3.0 speed.
Any solutions?
UPDATE: AMD driver crashed during transferring of various data from external HD to internal HD. Screen blacked out for a second before becoming normal again. What is happening? I'm pretty sure transferring items don't need to use HD6770M. Note: I'm on fixed mode running HD6770m permanently.