Computer crashes alot (details)

Okay here is my story. About 4 months ago I bought an Asus Essentio desktop from bestbuy (link below). Now the like is to a newer model of this computer that seems to have solved these problems. But this computer suffers from chronic crashes, Im talking 2-3 times a day, sometimes I see the BSOD and sometimes the screen goes black then nothing. I have tried EVERYTHING I could think of, I replaced the cpu fan, upgraded from windows vista to windows 7 (I even installed 32 bit in case of 64 bit being too unstable). Im at the end of my rope, I cant find a solution, and its really starting to interrupt my gaming. Now it seems to happen when im starting windows and everything loads, when I try to start a program it will crash, also when Im trying to connect to a server in a computer game it will also crash, but that seems to be the only times it happens. It wont happen once I pass about a minute after I start the computer and while im in a game already connected to a server.

So im asking for help, I am willing to try anything I just need some help.

Link to the updated computer its basically the same but mine has an Nvidia GTX220 vid card and 720gigs of HDD
http://www.bestbuy.com/site/Asus+- [...] &cp=1&lp=1

can you tell me how? because when I do get BSOD the screen is VERY distorted, I cant read anything on it.

You can also try to find a program called bluescreenview by NirSoft.
It will give you the information for the last blues screen your system had.

im in the process of getting the dump file... also the RAM in brand now, and its 4 sticks of 2gb each.

okay im having trouble opening the .dmp file, I tried a couple tutorials on the internet using debugger tools for windows but it keeps saying the file in inaccessable and needs permission to read... or corse im the admin so I have permission tho.

okay basically any program I try to open the .dmp file with dosent work because it says I need permission to view the file...... I have tried running the programs as admin too.... no luck, I really need help here....

We could probably go into alot of trouble shooting but since it is under warranty, take it back and let the geeks handle it.

I was able to open an older version of my .dmp file with bluescreenviewer... there is ALOT of stuff, what do you need to know?

okay ill give it a try, ill get back you you guys at the end of the day... I have the essintio cg5270, but like I said, they upgraded the model with new hardware. also it came with the RAM, 4 sticks of 2gb each.