have updated my site. posting here too IN SHORT :
TROUBLE-SHOOTING WINDOWS VISTA STOP ERRORS / BSOD's.
First & Foremost, see if a System Restore or Last Known Good Configuration to resolve this issue.
Else, then run your ant-virus and anti-spyware and your PC Junk/Registry Cleaner. After this, Run the Windows Check Disk Utility.
Then try to identify if you've made any software or hardware change or modification.
In most cases, software is the victim and not the cause of BSOD's. So don’t rule out hardware problems. It could be damaged hard disks, defective physical RAM, overheated CPU chips or anything else !
Check if you can see a driver name in the error details. If you can, then simply disabling, removing, or rolling back that driver to an earlier version can help solve that problem. Network interface cards, disk controllers and Video Adapters are the culprits, most often.
Check your memory. Use Vista's Memory Diagnostic Tool. Go to Control Panel and type "memory" in the Search box. Under Administrative Tools, click Diagnose Your Computer’s Memory Problems. In the Windows Memory Diagnostics Tool, shown here, select one of the options.
Check your system BIOS carefully Is an update available from the manufacturer of the system or motherboard? Check the BIOS documentation carefully; resetting all BIOS options to their defaults can sometimes resolve an issue caused by overtweaking.
Check if you are you low on system resources? Sometimes a critical shortage of Disk Space or RAM can cause BSOD's.
Check if system file has been damaged? Work in Safe Mode, as only the core drivers and services are activated. If your system starts in Safe Mode but not normally, you very likely have a problem driver. Try running Device Manager in Safe Mode and uninstalling the most likely suspect. Or run System Restore in Safe Mode.
15 MOST COMMON STOP ERRORS / BSOD's IN WINDOWS.
STOP 0x000000D1 or DRIVER_IRQL_NOT_OR_EQUAL
Probably the most common BSOD ! Occurs when a driver has illegally accessed a memory location while NT is operating at a specific IRQL. This is a driver coding error, akin to trying to access an invalid memory location. Recovery/Workaround:Usually none. But these may help KB810093 , KB316208 & KB810980.
STOP 0x0000000A or IRQL_NOT_LESS_OR_EQUAL
A kernel-mode process or driver attempted to access a memory location without authorization. This Stop error is typically caused by faulty or incompatible hardware or software. The name of the offending device driver often appears in the Stop error and can provide an important clue to solving the problem. If the error message points to a specific device or category of devices, try removing or replacing devices in that category. If this Stop error appears during Setup, suspect an incompatible driver, system service, virus scanner, or backup program. This KB314063 may show you the direction.
STOP 0x00000050 or PAGE_FAULT_IN_NONPAGED_AREA
A hardware driver or system service requested data that was not in memory. The cause may be defective physical memory or incompatible software,especially remote control and antivirus programs. If the error occurs immediately after installing a device driver or application, try to use Safe Mode to remove the driver or uninstall the program. For more information, see KB894278 & KB183169.
STOP 0x000000C2 or BAD_POOL_CALLER
A kernel-mode process or driver attempted to perform an illegal memory allocation. The problem can often be traced to a bug in a driver or software. It is also occasionally caused by a failure in a hardware device. For more information, see KB265879.
STOP OX000000ED or UNMOUNTABLE_BOOT_VOLUME
Occurs if Windows if unable to access the volume containing the boot files. But if you get this message while updating TO Vista, check that you have compatible drivers for the disk controller and also re-check the drive cabling, and ensure that it is configured properly. If you're reusing ATA-66 or ATA-100 drivers, make sure you have an 80-connector cable, and not the standard 40-connector IDE cable. See KB297185 and KB315403.
...etc...
More at READY-RECKONER : Windows Vista 'Stop Errors' or 'The Blue Screen Of Death'