New PC build: World of Warcraft Issue

This is a copy/paste from a thread I created @ the WoW Forums.

Greetings:
1 month ago I built a new gaming PC, which specs will be detailed at the bottom. I have experienced 2 specific issues with World of Warcraft, and specificaly on this game, for I have played Mass Effect (1) for over a month without any noticable issue.

Issue #1: Gunship Battle and dalaran sewers.
-The first week I used the PC I was on the gunship battle and I suddendly got a blue screen of death, I had to restart the PC to resume usage, no problems after that.

- Week 2 on Gunship the screen froze and green flickering squares appeared all over the screen, nothing after that, this episode would last 5 secs and then everything returned to normal.

- Week 3 the Gunship (alliance side) was not there, my friend, playing right beside me was on the ship and I could see it on his screen, while I watched as he vanished as soon as he steped on the ship on my screen, because it was not there, I steped on the invisible ship and died, I relelased and it was there.

- About 3 days ago I had the same problem as Week 2 on gunship, green flickering squares on the frozen screen, but this time on the dalaran sewers, this episode would last 5 secs and then everything returned to normal.

Issue #2:
- Last week i was attempting sindragosa on 10 man, and after 5 or so wipes I released and when I was on the hallway leading to the entrance the fps droped from my usual 60fps to 15 fps, it remained that way until i restart the computer. Note that the framerate was affecting everything, even outside wow.

- Today, I had the exact same problem, after a few attempts on Sindragosa, I released and ran back and there it was again 15fps, it remained that way until I restarted the PC.

Issues outside WoW:
- The cursor would suddendly become really big.
- After the green flickering squares on WoW, some parts of my screen would flicker and merge with other images, kinda hard to explain, it goes away after 5-10 secs.

PC information:
Operating system: Windows 7 professional ( haven't activated it yet, wil do after it runs out)
Processor: Intel Core i5 CPU, 750 @ 2.67ghz (4cpu) - 2.8ghz
Memory: 4096MB RAM
DirectX Version: DirectX 11

DISPLAY
Device Name: ATI Radeon 5700 series
Version: 8.702.0.0
Date: N/A
DDI Version: 10.1

Thanks for reading up to this point, I will be very gratefull on any suggestions. I really need to pinpoint the problem before I start sending pieces back for warranty.

k, u should had over loaded ur pc with one or many of these:
- installing and uninstalling many softwares, they leave particules on pc for many reasons n that keeps place on ur system n even worse they take from ur processor smth
- that problems mostly happens after on over heating problem which this ATI model kinda notorious but of course u shouldnt change it, u can try to avoid heating like increasing fan, keeping ur system clean, try not to do many thing back ground,
- n keep in mind how long does ur pc stays on?...

these r basic solutions i can offer, hope had been usefull, good luck
close the storage of windows 7, at least lower it, it steals from ur system.

yea, sud b helpful,
i use tune up sometimes too

sorry to bust your bubble Purple, but I have used both manufacturers and no one is better then the other, nVidia is fast in 3D games, ATI is up to par with them, ATI is best for 2D applications, I have and still own both companies and my ATI 5770 flies, playing COD4MW with 75FPS avg @ 1920x1200 maxed graphics 4xAA, so I would not worry about ATI, worry more with nVidia and there issues with the 92nm GPU and all the failure vs ATI and no major failures. Never judge a book by it's cover, if your an nVidia Fanboy, fine, but don't knocked the other company unless you try it.

^ Awesome troubleshooting skillz, bro.


@ OP - Try uninstalling the graphics drivers, then running Driver Sweeper, then re-installing the latest drivers from ATI's website. Also, can you tell us the temps for the CPU and GPU while under load and at idle? Are you doing any overclocking? Thanks.