Random App Crashes on new Install of Windows 7 Ultimate 64Bit

Problems started happening last night just after I installed the new CS:GO Beta, which I think is unrelated.

Anyway I opened up chrome, but wasn't able to open it up. It just wouldn't load whenever I tried to open it. I uninstalled and reinstalled and was fine. Then it happened when I tried to open up Windows Media Player. Eventually I got a BSOD.

Windows then refused to reboot and I went through with the startup checker on the install DVD and it said it fixed it. But then when rebooting it gets past the windows 7 logo, and then a blank black screen. I can't do anything.

I then decide to reinstall Windows 7 (BIOS or hardware setting remains unchanged since 4 months ago). During installation wizard I get a cannot access C:\Boot error just after setting the windows update wizard, apparently my BCD was corrupted? And when running windows for the first time I get the BCD error again.

So This gets fixed by BOOTREC /REBUILDBCD

So I reinstall once again and this time I get no BCD errors. But whenever I try to open some programs be it IE, Device Manager it just has mouse busy symbol then windows acts as if i never clicked it. Eventually restarting Explorer.exe does this as well.

I figure my Memory might be at fault so I run MEMTEST86+ for around 16 hours getting 8 passes and no errors. So RAM is fine.

Figure I need to update my BIOS, so I do that and I reset my Motherboard settings to default, and reinstall Windows.

However I still keep getting errors with opening random programs. This time I managed to get an error (Haven't installed GPU drivers yet so bad res)


So honestly I'm at a loss now.

The only thing I can think of is my SSD (Primary OS) disk has gone bad, but checking SSDLife it says its fine.

Perhaps its the Marvell SATA3 Controller PCI-e I'm using which is at fault?

My motherboard is only SATA2 so I connected the spinning HDDs to it, while I connected my SSD to the SATA3 controller.

Anything I can do?



Specs:

System Manufacturer/Model Number Custom
OS Windows 7 Ultimate 64 Bit
CPU AMD Phenon X2 550
Motherboard ASUS Crosshair iii
Memory 8GB 1600
Graphics Card(s) ATI 5770
Sound Card Motherboard
Monitor(s) Displays LG Monitor
Screen
Resolution
N/A
Hard Drives Marvell SATA3 Controller PCI-e:
OCZ-AGILITY3

Motherboard SATA2:
WD1002FAEX
WD15EARS
WD20EARS
WD20EARS

Looks like it might be the Marvell controller. I did an actual speed test and it shows it at 250MB/s max. I was def able to get higher speeds when I first used the controller. So maybe its been effected?

I'll try to remove the controller and see if that helps.

Ok just did a reinstall of everything without the controller. Yep it def was the Marvell Controller. What a pain.

I really don't understand how my Read speed went from 500ish speeds down to 300MB/S with the controller. Are Marvell controllers known to drop speed like that?