Bsod,crashes big problem help!

Hey guyz i've been having this problem. Today i bought a 1gig ddr2 ram card and msi ati hd radeon 5450. So my pc has 512mb of it's own but strange enough when i check it's ram it only shows 1gig doesn't really bother me but ok the problem is that when i installed the driver/ati catalyst (cd of the vcard) it asked me to restart i did. My pc restarted and suddenly it crashes out of nowhere than i turn the power off and again it crashes with a bsod. After a few tries it worked and than i had to launch system cehck or smthing at the startup it sayed it would fix the problems. Well it didn't and after a couple of times i reached my desktop and than out of nowhere it randomly crashes. Any solution guys? Thanks in advance.

Alright here they are
Attachment 79746

Hi,

Code:

BugCheck 34, {50830, fffff88002f31828, fffff88002f31090, fffff80002cb5b0c}
BugCheck 1E, {0, 0, 0, 0}
BugCheck 1A, {41284, fffff9801291b001, 4a0f, fffff780c0000000}
BugCheck BE, {fffff88002caa040, 800000003d3a8121, fffff88004e35aa0, b}
BugCheck 3B, {c0000005, fffff80002c68502, fffff88003395bf0, 0}

Bugchecks all over the place - usually consistent with hardware fault.

Code:

System Uptime: 0 days 0:00:33.000
System Uptime: 0 days 0:16:22.396
System Uptime: 0 days 0:28:25.013
System Uptime: 0 days 0:00:46.984
System Uptime: 0 days 0:21:46.658

The fact that on 2 out of the 5 occasions it BSODed with in a minute does and on the others after several hours confirms this.

There is however a possible software cause for at least one of the dumps:

Code:

Rtnic64.sys  Sat May 31 03:12:23 2008

Rtnic64.sys - Realtek Network driver, update from: Realtek

dvd709 said:

Today i bought a 1gig ddr2 ram card and msi ati hd radeon 5450. So my pc has 512mb of it's own but strange enough when i check it's ram it only shows 1gig doesn't really bother me but ok the problem is that when i installed the driver/ati catalyst (cd of the vcard) it asked me to restart i did.

Take one of your RAM sticks out (preferably the new one) - all RAM should be matched exactly otherwise problems can develop fast.

Regards,
Reventon