Hard Hardware Problem

Basically a computer has 2gb of ram 2 more gb of EXACT ram is place inside the computer,
when started it MASS reboot and only staying on for 8 seconds tops.
Now with the new 2 gb of ram removed computer wont boot up ( so its back to normal)
edit: A disk READ error has occured,
There are 2 WD Velociraptors 300gb WERE in raid ,well it was till i was forced to change the bios,
Windows 7 repair tool does not find and recongise the hard drives
In Bios advanced cmos settings the raid/achi settings is disabled, if it any of the options it will just freeze, with only 1 of the veloci's being detected
Basically how the f do i make windows 7 load up without a disk error has occured
If you need more info just say

windows 7 startup repair how long does it take?

I'ved tried the bootthingy fixmbr thats one says successful
fixboot does not work says element not found

Your missing your raid drivers they may need to be installed specifically during install - post your system specs so we can help.

Check your ram.

Memory Diagnostics Tool

Memtest86+ - Advanced Memory Diagnostic Tool

Check your HD.

SFC /SCANNOW Command - System File Checker

Check with a hard drive diagnostic tools.

Hard Drive Diagnostics Tools and Utilities (Storage) - TACKtech Corp.

whest said:

Your missing your raid drivers they may need to be installed specifically during install - post your system specs so we can help.

The system was already running windows 7 ultimate FINE before the new 2gb of ram was placed inside

system specs

q6600
OCZ ddr2 6400 1gb x2
MOBO gigbabyte x48 dq6
GPu evga 260
all default settings no oc or nothing now
how do i check if raid drivers are somehow missing when it was working before?

MORE Questions how long does start up repair take?
In system recovery tools it says
Operating system unknown on (unknown) local disk
whats is it meant to say and the screen before, i cant see a harddrive even though ive tried installing the raid ddrivers again via a floppy disk, normally would you be able to click on a harddrive?

How long does startup repair take to complete
Thanks in advanced
Some update
from the start up repair

Root cause found:
MBR is corrupt

Repair action Disk metadata repair
Result: failed Error code = 0x2
Time taken 0ms

Do startup repair 3 to 4 times.

Tried it fails giving the same error

Strange problem if i only use of the the HDD in raid mode it will get pass the bios and boot from either the dvd or HDD giving a disk error has occured
If i use both of the HDD the bios crashes before i can press DEL which open up the bios screen.

gave in and deleted the raid partions and reput it into raid
basically reformatted. .............
and it solved the problem