All installs corrupt..

Hello!

My computer was running somewhat slow and got bluescreens way to often (the past year I've only had bluescreen once or twice) and every single time i was installing a software such as 3ds max, AVG, ati-drivers etc. the computer said that the file was corrupt.. Steam shut down on me frequently aswell... thinking it was a virus i decided to reinstall my windows, I also decided to Nuke the hard drive with Killdisk.

And eventhough I did all of this the problems still remain.. I suspect it could be the hard drive which is corrupt and wont let me install anything. But according to Western Digital LifeGuard Diagnostics software (which i somehow managed to install) my hard drive is suppose to be fine..

Any idea why my computer is like this?

Thanks!

Westerm Digital Caviar Green 1tb

amd phenom II x3 720

ati 4870 1gb

8 gb ram corsair

psu 630 w

motherboard asus ma770-ud3

Geez i hate ram, mine seems to break all the time... Ill try it, Thanks :)

Have you run chkdsk?

Okej, so its not the ram, tried both methods.. :(

All right ill be sure to check next bluescreen and ill downgrade my drivers :) Ive allready checked Westerns Diagnostic and according to it my hard drives fine :O

Here's the bluescreen problem details:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1053

Additional information about the problem:
BCCode: 1a
BCP1: 0000000000005003
BCP2: FFFFF70001080000
BCP3: 0000000000000EB9
BCP4: 00000EBB00001D70

Files that help describe the problem:
C:WindowsMinidump72711-26566-01.dmp
C:WindowsTempWER-33477-0.sysdata.xml

Oh and by the way.. when i ran memtest i got a bunch of errors.. so my ram might acctuly be the problem.. Only thing is i dont know which one is broken :( since i still had problems when running my system with the ramsticks sepertaly. Could it be that all of them are broken? :(

Okej I do not think its a ram problem anymore, I swtiched to some old ram I had laying around, problem still remains..