Been Having BSODs for months, Help with my .dmp's

Hey there. I've been having BSOD's for a while now, I've come to think that I have a power supply that can't meet my computers requirements, but since money is a bit tight right now I can't afford a new one just yet. I just want to know for sure if that could be the problem before I spend money on it to find out that isn't what is causing these BSODs. They were alot more frequent before when I had 2 8800's in SLi. I took out one of those and they happen much much less often, usually not when I'm even on it. The most frequent was this morning. I left the house at around 7:00AM and then returned at about 10:10AM. The minidmp file was created at 9:00AM, so I'm guessing the BSOD happened then.

Here are my codes.

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.0.6000.2.0.0.768.3
Locale ID: 4105

Additional information about the problem:
BCCode: c000021a
BCP1: FFFFF880020E6D20
BCP2: FFFFFFFFC0000001
BCP3: 0000000000000000
BCP4: 0000000000000000
OS Version: 6_0_6000
Service Pack: 0_0
Product: 768_1

Files that help describe the problem:
C:\Windows\Minidump\Mini032508-01.dmp
C:\Users\Chris\AppData\Local\Temp\WER-3817843-0.sysdata.xml
C:\Users\Chris\AppData\Local\Temp\WER59FD.tmp.version.txt

There are more minidmp files but I do not have the codes for those. I Will upload them anyways just in case they can help.

Inside the MiniDump:

Inside the other MiniDumps1:

Please run Memtest for 7 Passes

ERROR_CODE: (NTSTATUS) 0xc000021a - {Fatal System Error} The %hs system process terminated unexpectedly with a status of 0x%08x (0x%08x 0x%08x). The system has been shut down.
BUGCHECK_STR: 0xc000021a_c0000001
CUSTOMER_CRASH_COUNT: 1

The problem is related to corrupted paging space. Refer this problem

Run chkdsk /r and re-allocate the paging space. If it still crashes, the ram is faulty.