I recieved an Alienware Aurora r2 about 2 years ago as a gift. In 2 years I have had the motherboard replaced twice, ram replaced, and graphics cards replaced all by Dell. Since then I have had problems with my Windows 7 installation. The first two times my registry files became corrupted and were deleted. Then the computer refused to boot. And now I am getting a message saying that windowscodecs.dll is missing as dew.exe cannot start. I have ran checkdisk with no success as well as use windows recovery tool. I have no problem with reinstalling windows again, however I have a feeling that one of the components seems to be causing this problem. When I first received the computer, the OS was installed on a WD 500gb hard drive. It ran fine while the OS was installed on that. I upgraded the hard drive to an ssd, OCZ silver series I think, and it ran fine until the registry files were corrupted. I assumed that the OEM windows disk was at fault so I bought myself a copy of Ultamite and tried that. It ran for a good 4-5months and now I'm getting the windowscodecs.dll message when I log in. Also, the background at the log in screen is black as well as the desktop background. Aero is also not working. Any suggestions?
x58 alienware motherboard
i7 920 @3.8ghz
12gb ddr3 1333mhz
1 120gb OCZ silver series ssd for boot
2 WD 500gb hard drives for data and games
2x ati radeon HD5870s crossfired